diff --git a/aleksis/apps/alsijil/locale/ar/LC_MESSAGES/django.po b/aleksis/apps/alsijil/locale/ar/LC_MESSAGES/django.po
index 8da31faa2922186eec9eb72699931daaea647dd9..16d99115744d1c93554b7536757d12c3dab364f5 100644
--- a/aleksis/apps/alsijil/locale/ar/LC_MESSAGES/django.po
+++ b/aleksis/apps/alsijil/locale/ar/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-24 12:02+0100\n"
+"POT-Creation-Date: 2021-03-18 14:33+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -18,106 +18,120 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=6; plural=n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 && n%100<=99 ? 4 : 5;\n"
 
-#: data_checks.py:15
+#: actions.py:30
+msgid "{} wants you to check some class register entries."
+msgstr ""
+
+#: actions.py:48
+#, python-brace-format
+msgid "We have successfully sent notifications to {count_teachers} persons for {count_items} lessons."
+msgstr ""
+
+#: actions.py:54
+msgid "Notify teacher to check data"
+msgstr ""
+
+#: data_checks.py:12
 msgid "Delete object"
 msgstr ""
 
-#: data_checks.py:25
+#: data_checks.py:22
 msgid "Set current groups"
 msgstr ""
 
-#: data_checks.py:36
+#: data_checks.py:33
 msgid "Reset personal note to defaults"
 msgstr ""
 
-#: data_checks.py:48
+#: data_checks.py:45
 msgid "Ensure that there are no personal notes in cancelled lessons"
 msgstr ""
 
-#: data_checks.py:49
+#: data_checks.py:46
 msgid "The personal note is related to a cancelled lesson."
 msgstr ""
 
-#: data_checks.py:76
+#: data_checks.py:73
 msgid "Ensure that 'groups_of_person' is set for every personal note"
 msgstr ""
 
-#: data_checks.py:77
+#: data_checks.py:74
 msgid "The personal note has no group in 'groups_of_person'."
 msgstr ""
 
-#: data_checks.py:111
+#: data_checks.py:99
 msgid "Ensure that there are no filled out lesson documentations on holidays"
 msgstr ""
 
-#: data_checks.py:112
+#: data_checks.py:100
 msgid "The lesson documentation is on holidays."
 msgstr ""
 
-#: data_checks.py:147
+#: data_checks.py:133
 msgid "Ensure that there are no filled out personal notes on holidays"
 msgstr ""
 
-#: data_checks.py:148
+#: data_checks.py:134
 msgid "The personal note is on holidays."
 msgstr ""
 
-#: data_checks.py:176
+#: data_checks.py:162
 msgid "Ensure that there are no excused personal notes without an absence"
 msgstr ""
 
-#: data_checks.py:177
+#: data_checks.py:163
 msgid "The personal note is marked as excused, but not as absent."
 msgstr ""
 
-#: forms.py:36
+#: forms.py:41
 msgid "Homework for the next lesson"
 msgstr ""
 
-#: forms.py:61 forms.py:185 templates/alsijil/print/full_register.html:199
+#: forms.py:66 forms.py:190 forms.py:272
+#: templates/alsijil/print/full_register.html:199
 msgid "Group"
 msgstr ""
 
-#: forms.py:64 templates/alsijil/print/full_register.html:170
+#: forms.py:69 templates/alsijil/print/full_register.html:170
 #: templates/alsijil/print/full_register.html:201
 msgid "Teacher"
 msgstr ""
 
-#: forms.py:79
+#: forms.py:84
 msgid "You can't select a group and a teacher both."
 msgstr ""
 
-#: forms.py:133 models.py:397
+#: forms.py:138 forms.py:274 models.py:397
 #: templates/alsijil/group_role/assigned_list.html:64
 msgid "Start date"
 msgstr ""
 
-#: forms.py:134 models.py:401
+#: forms.py:139 forms.py:275 models.py:401
 #: templates/alsijil/group_role/assigned_list.html:65
 msgid "End date"
 msgstr ""
 
-#: forms.py:135
+#: forms.py:140
 msgid "Start period"
 msgstr ""
 
-#: forms.py:136
+#: forms.py:141
 msgid "End period"
 msgstr ""
 
-#: forms.py:137 templates/alsijil/absences/register_confirm.html:52
+#: forms.py:142 templates/alsijil/absences/register_confirm.html:52
 #: templates/alsijil/class_register/lesson.html:261
-#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:235
 #: templates/alsijil/class_register/week_view.html:342
 #: templates/alsijil/print/full_register.html:75
 #: templates/alsijil/print/full_register.html:312
 msgid "Absent"
 msgstr ""
 
-#: forms.py:138 templates/alsijil/absences/register_confirm.html:56
+#: forms.py:143 templates/alsijil/absences/register_confirm.html:56
 #: templates/alsijil/class_register/lesson.html:263
-#: templates/alsijil/class_register/person.html:97
-#: templates/alsijil/class_register/person.html:226
+#: templates/alsijil/class_register/person.html:113
+#: templates/alsijil/class_register/person.html:243
 #: templates/alsijil/partials/mark_as_buttons.html:2
 #: templates/alsijil/partials/mark_as_buttons.html:3
 #: templates/alsijil/partials/persons_with_stats.html:74
@@ -126,25 +140,40 @@ msgstr ""
 msgid "Excused"
 msgstr ""
 
-#: forms.py:140 models.py:62 models.py:199
+#: forms.py:145 models.py:62 models.py:199
 #: templates/alsijil/class_register/lesson.html:264
 #: templates/alsijil/class_register/lesson.html:305
 msgid "Excuse type"
 msgstr ""
 
-#: forms.py:145 templates/alsijil/class_register/lesson.html:266
+#: forms.py:150 templates/alsijil/class_register/lesson.html:266
 #: templates/alsijil/class_register/lesson.html:326
 #: templates/alsijil/print/full_register.html:314
 msgid "Remarks"
 msgstr ""
 
-#: forms.py:195 templates/alsijil/absences/register.html:9
+#: forms.py:200 templates/alsijil/absences/register.html:9
 #: templates/alsijil/class_register/lesson.html:260
 #: templates/alsijil/group_role/assigned_list.html:63
 msgid "Person"
 msgstr ""
 
-#: menus.py:6 preferences.py:8 templates/alsijil/print/full_register.html:16
+#: forms.py:270
+msgid "School term"
+msgstr ""
+
+#: forms.py:271
+msgid "Has lesson documentation"
+msgstr ""
+
+#: forms.py:273 templates/alsijil/class_register/week_view.html:106
+#: templates/alsijil/class_register/week_view.html:202
+#: templates/alsijil/print/full_register.html:169
+#: templates/alsijil/print/full_register.html:200
+msgid "Subject"
+msgstr ""
+
+#: menus.py:6 preferences.py:9 templates/alsijil/print/full_register.html:16
 msgid "Class register"
 msgstr ""
 
@@ -175,13 +204,18 @@ msgstr ""
 msgid "Assign group role"
 msgstr ""
 
-#: menus.py:82 models.py:63 templates/alsijil/excuse_type/list.html:8
+#: menus.py:82 templates/alsijil/class_register/all_objects.html:5
+#: templates/alsijil/class_register/all_objects.html:8
+msgid "All lessons"
+msgstr ""
+
+#: menus.py:93 models.py:63 templates/alsijil/excuse_type/list.html:8
 #: templates/alsijil/excuse_type/list.html:9
 #: templates/alsijil/partials/legend.html:26
 msgid "Excuse types"
 msgstr ""
 
-#: menus.py:93 models.py:204 models.py:361
+#: menus.py:104 models.py:204 models.py:361
 #: templates/alsijil/class_register/lesson.html:265
 #: templates/alsijil/extra_mark/list.html:8
 #: templates/alsijil/extra_mark/list.html:9
@@ -191,7 +225,7 @@ msgstr ""
 msgid "Extra marks"
 msgstr ""
 
-#: menus.py:104
+#: menus.py:115
 msgid "Manage group roles"
 msgstr ""
 
@@ -252,6 +286,7 @@ msgstr ""
 
 #: models.py:239 templates/alsijil/class_register/lesson.html:114
 #: templates/alsijil/class_register/lesson.html:251
+#: templates/alsijil/class_register/person.html:31
 #: templates/alsijil/class_register/week_view.html:71
 #: templates/alsijil/class_register/week_view.html:317
 msgid "Personal notes"
@@ -284,7 +319,8 @@ msgstr ""
 msgid "Lesson documentation"
 msgstr ""
 
-#: models.py:328 templates/alsijil/class_register/week_view.html:68
+#: models.py:328 templates/alsijil/class_register/person.html:27
+#: templates/alsijil/class_register/week_view.html:68
 msgid "Lesson documentations"
 msgstr ""
 
@@ -345,72 +381,84 @@ msgstr ""
 msgid "Can list all personal note filters"
 msgstr ""
 
-#: preferences.py:16
+#: preferences.py:17
 msgid "Block adding personal notes for cancelled lessons"
 msgstr ""
 
-#: preferences.py:24
+#: preferences.py:25
 msgid "Allow users to view their own personal notes"
 msgstr ""
 
-#: preferences.py:33
+#: preferences.py:34
 msgid "Allow primary group owners to register future absences for students in their groups"
 msgstr ""
 
 #: preferences.py:43
+msgid "Allow original teachers to edit their lessons although they are substituted"
+msgstr ""
+
+#: preferences.py:52
 msgid "Carry over data from first lesson period to the following lesson periods in lessons over multiple periods"
 msgstr ""
 
-#: preferences.py:46
+#: preferences.py:55
 msgid "This will carry over data only if the data in the following periods are empty."
 msgstr ""
 
-#: preferences.py:54
+#: preferences.py:63
 msgid "Carry over personal notes to all following lesson periods on the same day."
 msgstr ""
 
-#: preferences.py:63
+#: preferences.py:72
 msgid "Allow teachers to open lesson periods on the same day and not just at the beginning of the period"
 msgstr ""
 
-#: preferences.py:67
+#: preferences.py:76
 msgid "Lessons in the past are not affected by this setting, you can open them whenever you want."
 msgstr ""
 
-#: preferences.py:76
+#: preferences.py:85
 msgid "Allow teachers to add data for lessons in holidays"
 msgstr ""
 
-#: preferences.py:85
+#: preferences.py:94
 msgid "Allow group owners to assign group roles to the parents of the group's members"
 msgstr ""
 
-#: preferences.py:94
+#: preferences.py:103
 msgid "Show assigned group roles in week view"
 msgstr ""
 
-#: preferences.py:95
+#: preferences.py:104
 msgid "Only week view of groups"
 msgstr ""
 
-#: preferences.py:103
+#: preferences.py:112
 msgid "Show assigned group roles in lesson view"
 msgstr ""
 
-#: tables.py:17 tables.py:37 tables.py:62
+#: preferences.py:122
+msgid "Items per page in lessons table"
+msgstr ""
+
+#: preferences.py:126
+msgid "Each page must show at least one item."
+msgstr ""
+
+#: tables.py:19 tables.py:39 tables.py:64
 #: templates/alsijil/group_role/partials/assignment_options.html:13
 msgid "Edit"
 msgstr ""
 
-#: tables.py:23 tables.py:43 tables.py:68
-#: templates/alsijil/class_register/person.html:260
+#: tables.py:25 tables.py:45 tables.py:70
+#: templates/alsijil/class_register/person.html:277
 #: templates/alsijil/group_role/partials/assignment_options.html:29
 msgid "Delete"
 msgstr ""
 
 #: templates/alsijil/absences/register.html:5
 #: templates/alsijil/absences/register.html:6
-#: templates/alsijil/class_register/person.html:30
+#: templates/alsijil/class_register/person.html:46
 #: templates/alsijil/class_register/week_view.html:332
 #: templates/alsijil/partials/persons_with_stats.html:115
 msgid "Register absence"
@@ -525,13 +573,13 @@ msgid "%(period)s. period"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:56
-#: templates/alsijil/class_register/person.html:190
+#: templates/alsijil/class_register/person.html:207
 #: templates/alsijil/class_register/week_view.html:151
 #: templates/alsijil/class_register/week_view.html:214
 #: templates/alsijil/class_register/week_view.html:268
 #: templates/alsijil/partials/lesson_status_icon.html:16
 #: templates/alsijil/print/full_register.html:335
-#: templates/alsijil/print/full_register.html:415
+#: templates/alsijil/print/full_register.html:415 util/alsijil_helpers.py:316
 msgid "Event"
 msgstr ""
 
@@ -585,7 +633,7 @@ msgid "Late persons:"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:262
-#: templates/alsijil/class_register/person.html:109
+#: templates/alsijil/class_register/person.html:125
 #: templates/alsijil/partials/persons_with_stats.html:17
 #: templates/alsijil/partials/persons_with_stats.html:34
 #: templates/alsijil/partials/persons_with_stats.html:91
@@ -620,16 +668,16 @@ msgid ""
 "              "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:8
+#: templates/alsijil/class_register/person.html:5
 msgid "Class register: person"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:16
+#: templates/alsijil/class_register/person.html:13
 #: templates/alsijil/class_register/students_list.html:10
 msgid "Back"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:19
+#: templates/alsijil/class_register/person.html:16
 #, python-format
 msgid ""
 "\n"
@@ -637,36 +685,36 @@ msgid ""
 "  "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:36
+#: templates/alsijil/class_register/person.html:52
 #: templates/alsijil/partials/legend.html:14
 msgid "Unexcused absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:45
-#: templates/alsijil/class_register/person.html:64
-#: templates/alsijil/class_register/person.html:201
-#: templates/alsijil/class_register/person.html:248
+#: templates/alsijil/class_register/person.html:61
+#: templates/alsijil/class_register/person.html:80
+#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:265
 msgid "Mark as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:48
-#: templates/alsijil/class_register/person.html:67
-#: templates/alsijil/class_register/person.html:204
-#: templates/alsijil/class_register/person.html:210
-#: templates/alsijil/class_register/person.html:251
-#: templates/alsijil/class_register/person.html:257
+#: templates/alsijil/class_register/person.html:64
+#: templates/alsijil/class_register/person.html:83
+#: templates/alsijil/class_register/person.html:221
+#: templates/alsijil/class_register/person.html:227
+#: templates/alsijil/class_register/person.html:268
+#: templates/alsijil/class_register/person.html:274
 msgid "Delete note"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:77
+#: templates/alsijil/class_register/person.html:93
 msgid "There are no unexcused lessons."
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:82
+#: templates/alsijil/class_register/person.html:98
 msgid "Statistics on absences, tardiness and remarks"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:91
+#: templates/alsijil/class_register/person.html:107
 #: templates/alsijil/partials/legend.html:10
 #: templates/alsijil/partials/persons_with_stats.html:16
 #: templates/alsijil/partials/persons_with_stats.html:26
@@ -675,34 +723,36 @@ msgstr ""
 msgid "Absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:95
+#: templates/alsijil/class_register/person.html:111
 #: templates/alsijil/print/full_register.html:274
 msgid "thereof"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:105
+#: templates/alsijil/class_register/person.html:121
 #: templates/alsijil/partials/persons_with_stats.html:86
 #: templates/alsijil/print/full_register.html:81
 #: templates/alsijil/print/full_register.html:283
 msgid "Unexcused"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:126
+#: templates/alsijil/class_register/person.html:142
 #: templates/alsijil/print/full_register.html:304
 msgid "Relevant personal notes"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:142
+#: templates/alsijil/class_register/person.html:158
 #, python-format
-msgid "Week %(week)s"
+msgid ""
+"Week\n"
+"                        %(week)s"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:150
-#: templates/alsijil/class_register/person.html:168
+#: templates/alsijil/class_register/person.html:167
+#: templates/alsijil/class_register/person.html:185
 msgid "Mark all as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:233
+#: templates/alsijil/class_register/person.html:250
 #, python-format
 msgid "%(late)s' late"
 msgstr ""
@@ -728,13 +778,6 @@ msgstr ""
 msgid "Period"
 msgstr ""
 
-#: templates/alsijil/class_register/week_view.html:106
-#: templates/alsijil/class_register/week_view.html:202
-#: templates/alsijil/print/full_register.html:169
-#: templates/alsijil/print/full_register.html:200
-msgid "Subject"
-msgstr ""
-
 #: templates/alsijil/class_register/week_view.html:107
 #: templates/alsijil/class_register/week_view.html:231
 msgid "Teachers"
@@ -864,6 +907,10 @@ msgstr ""
 msgid "Stop"
 msgstr ""
 
+#: templates/alsijil/notifications/check.html:1
+msgid "Please check if the following class register entries are complete and correct:"
+msgstr ""
+
 #: templates/alsijil/partials/absences.html:6
 #: templates/alsijil/partials/persons_with_stats.html:27
 #: templates/alsijil/partials/persons_with_stats.html:44
@@ -921,6 +968,22 @@ msgstr ""
 msgid "e"
 msgstr ""
 
+#: templates/alsijil/partials/objects_table.html:4
+msgid "Lesson filter"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:9
+msgid "Update filters"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:22
+msgid "Lesson table"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:31
+msgid "Execute"
+msgstr ""
+
 #: templates/alsijil/partials/persons_with_stats.html:7
 msgid "No students available."
 msgstr ""
@@ -1096,93 +1159,93 @@ msgid "Yes"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:373
-msgid "Lesson documentation for week"
+msgid "Week"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:383
 msgid "Notes"
 msgstr ""
 
-#: views.py:96
+#: views.py:108
 msgid "You either selected an invalid lesson or there is currently no lesson in progress."
 msgstr ""
 
-#: views.py:129
+#: views.py:141
 msgid "You are not allowed to create a lesson documentation for a lesson in the future."
 msgstr ""
 
-#: views.py:211
+#: views.py:225
 msgid "The lesson documentation has been saved."
 msgstr ""
 
-#: views.py:245
+#: views.py:259
 msgid "The personal notes have been saved."
 msgstr ""
 
-#: views.py:766
+#: views.py:782
 msgid "The absences have been marked as excused."
 msgstr ""
 
-#: views.py:781
+#: views.py:797
 msgid "The absence has been marked as excused."
 msgstr ""
 
-#: views.py:958
+#: views.py:988
 msgid "The absence has been saved."
 msgstr ""
 
-#: views.py:979
+#: views.py:1009
 msgid "The personal note has been deleted."
 msgstr ""
 
-#: views.py:1001
+#: views.py:1031
 msgid "The extra mark has been created."
 msgstr ""
 
-#: views.py:1013
+#: views.py:1043
 msgid "The extra mark has been saved."
 msgstr ""
 
-#: views.py:1024
+#: views.py:1054
 msgid "The extra mark has been deleted."
 msgstr ""
 
-#: views.py:1045
+#: views.py:1075
 msgid "The excuse type has been created."
 msgstr ""
 
-#: views.py:1057
+#: views.py:1087
 msgid "The excuse type has been saved."
 msgstr ""
 
-#: views.py:1068
+#: views.py:1098
 msgid "The excuse type has been deleted."
 msgstr ""
 
-#: views.py:1089
+#: views.py:1119
 msgid "The group role has been created."
 msgstr ""
 
-#: views.py:1101
+#: views.py:1131
 msgid "The group role has been saved."
 msgstr ""
 
-#: views.py:1112
+#: views.py:1142
 msgid "The group role has been deleted."
 msgstr ""
 
-#: views.py:1145 views.py:1177
+#: views.py:1175 views.py:1207
 msgid "The group role has been assigned."
 msgstr ""
 
-#: views.py:1196
+#: views.py:1226
 msgid "The group role assignment has been saved."
 msgstr ""
 
-#: views.py:1217
+#: views.py:1247
 msgid "The group role assignment has been stopped."
 msgstr ""
 
-#: views.py:1230
+#: views.py:1260
 msgid "The group role assignment has been deleted."
 msgstr ""
diff --git a/aleksis/apps/alsijil/locale/de_DE/LC_MESSAGES/django.po b/aleksis/apps/alsijil/locale/de_DE/LC_MESSAGES/django.po
index ebc7585d5e3169d011ccd0674c05b5f873c6237c..4e1d850fa592d07c4f28a75f868e261933b99d62 100644
--- a/aleksis/apps/alsijil/locale/de_DE/LC_MESSAGES/django.po
+++ b/aleksis/apps/alsijil/locale/de_DE/LC_MESSAGES/django.po
@@ -7,11 +7,10 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-24 12:02+0100\n"
+"POT-Creation-Date: 2021-03-18 14:33+0100\n"
 "PO-Revision-Date: 2021-02-24 18:54+0000\n"
 "Last-Translator: Jonathan Weth <teckids@jonathanweth.de>\n"
-"Language-Team: German <https://translate.edugit.org/projects/aleksis/"
-"aleksis-app-alsijil/de/>\n"
+"Language-Team: German <https://translate.edugit.org/projects/aleksis/aleksis-app-alsijil/de/>\n"
 "Language: de_DE\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -19,106 +18,120 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
 "X-Generator: Weblate 4.4\n"
 
-#: data_checks.py:15
+#: actions.py:30
+msgid "{} wants you to check some class register entries."
+msgstr ""
+
+#: actions.py:48
+#, python-brace-format
+msgid "We have successfully sent notifications to {count_teachers} persons for {count_items} lessons."
+msgstr ""
+
+#: actions.py:54
+msgid "Notify teacher to check data"
+msgstr ""
+
+#: data_checks.py:12
 msgid "Delete object"
 msgstr "Objekt lÃ¶schen"
 
-#: data_checks.py:25
+#: data_checks.py:22
 msgid "Set current groups"
 msgstr "Aktuelle Gruppen setzen"
 
-#: data_checks.py:36
+#: data_checks.py:33
 msgid "Reset personal note to defaults"
 msgstr "PersÃ¶nliche Notiz zurÃ¼cksetzen"
 
-#: data_checks.py:48
+#: data_checks.py:45
 msgid "Ensure that there are no personal notes in cancelled lessons"
 msgstr "Sicherstellen, dass es keine persÃ¶nlichen Notizen in ausgefallenen Stunden gibt"
 
-#: data_checks.py:49
+#: data_checks.py:46
 msgid "The personal note is related to a cancelled lesson."
 msgstr "Die persÃ¶nliche Notiz ist einer ausgefallenen Stunde zugeordnet."
 
-#: data_checks.py:76
+#: data_checks.py:73
 msgid "Ensure that 'groups_of_person' is set for every personal note"
 msgstr "Sicherstellen, dass \"groups_of_person\" fÃ¼r alle persÃ¶nlichen Notizen gesetzt ist"
 
-#: data_checks.py:77
+#: data_checks.py:74
 msgid "The personal note has no group in 'groups_of_person'."
 msgstr "Die persÃ¶nliche Notiz hat keine Gruppe in \"groups_of_person\"."
 
-#: data_checks.py:111
+#: data_checks.py:99
 msgid "Ensure that there are no filled out lesson documentations on holidays"
 msgstr "Sicherstellen, dass es keine ausgefÃ¼llten Stundendokumentationen in den Ferien gibt"
 
-#: data_checks.py:112
+#: data_checks.py:100
 msgid "The lesson documentation is on holidays."
 msgstr "Die Stundendokumentation ist in den Ferien."
 
-#: data_checks.py:147
+#: data_checks.py:133
 msgid "Ensure that there are no filled out personal notes on holidays"
 msgstr "Sicherstellen, dass es keine ausgefÃ¼llten persÃ¶nlichen Notizen in den Ferien gibt"
 
-#: data_checks.py:148
+#: data_checks.py:134
 msgid "The personal note is on holidays."
 msgstr "Die persÃ¶nliche Notiz ist in den Ferien."
 
-#: data_checks.py:176
+#: data_checks.py:162
 msgid "Ensure that there are no excused personal notes without an absence"
 msgstr "Sicherstellen, dass es keine entschuldigten persÃ¶nlichen Notizen ohne eine Absenz gibt"
 
-#: data_checks.py:177
+#: data_checks.py:163
 msgid "The personal note is marked as excused, but not as absent."
 msgstr "Die persÃ¶nliche Notiz ist als entschuldigt, aber nicht als abwesend markiert."
 
-#: forms.py:36
+#: forms.py:41
 msgid "Homework for the next lesson"
 msgstr "Hausaufgabe zur nÃ¤chsten Stunde"
 
-#: forms.py:61 forms.py:185 templates/alsijil/print/full_register.html:199
+#: forms.py:66 forms.py:190 forms.py:272
+#: templates/alsijil/print/full_register.html:199
 msgid "Group"
 msgstr "Gruppe"
 
-#: forms.py:64 templates/alsijil/print/full_register.html:170
+#: forms.py:69 templates/alsijil/print/full_register.html:170
 #: templates/alsijil/print/full_register.html:201
 msgid "Teacher"
 msgstr "Lehrkraft"
 
-#: forms.py:79
+#: forms.py:84
 msgid "You can't select a group and a teacher both."
 msgstr "Es kann nur entweder eine Gruppe oder eine Lehrkraft ausgewÃ¤hlt werden."
 
-#: forms.py:133 models.py:397
+#: forms.py:138 forms.py:274 models.py:397
 #: templates/alsijil/group_role/assigned_list.html:64
 msgid "Start date"
 msgstr "Startdatum"
 
-#: forms.py:134 models.py:401
+#: forms.py:139 forms.py:275 models.py:401
 #: templates/alsijil/group_role/assigned_list.html:65
 msgid "End date"
 msgstr "Enddatum"
 
-#: forms.py:135
+#: forms.py:140
 msgid "Start period"
 msgstr "Startstunde"
 
-#: forms.py:136
+#: forms.py:141
 msgid "End period"
 msgstr "Endstunde"
 
-#: forms.py:137 templates/alsijil/absences/register_confirm.html:52
+#: forms.py:142 templates/alsijil/absences/register_confirm.html:52
 #: templates/alsijil/class_register/lesson.html:261
-#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:235
 #: templates/alsijil/class_register/week_view.html:342
 #: templates/alsijil/print/full_register.html:75
 #: templates/alsijil/print/full_register.html:312
 msgid "Absent"
 msgstr "Abwesend"
 
-#: forms.py:138 templates/alsijil/absences/register_confirm.html:56
+#: forms.py:143 templates/alsijil/absences/register_confirm.html:56
 #: templates/alsijil/class_register/lesson.html:263
-#: templates/alsijil/class_register/person.html:97
-#: templates/alsijil/class_register/person.html:226
+#: templates/alsijil/class_register/person.html:113
+#: templates/alsijil/class_register/person.html:243
 #: templates/alsijil/partials/mark_as_buttons.html:2
 #: templates/alsijil/partials/mark_as_buttons.html:3
 #: templates/alsijil/partials/persons_with_stats.html:74
@@ -127,25 +140,42 @@ msgstr "Abwesend"
 msgid "Excused"
 msgstr "Entschuldigt"
 
-#: forms.py:140 models.py:62 models.py:199
+#: forms.py:145 models.py:62 models.py:199
 #: templates/alsijil/class_register/lesson.html:264
 #: templates/alsijil/class_register/lesson.html:305
 msgid "Excuse type"
 msgstr "Entschuldigungsart"
 
-#: forms.py:145 templates/alsijil/class_register/lesson.html:266
+#: forms.py:150 templates/alsijil/class_register/lesson.html:266
 #: templates/alsijil/class_register/lesson.html:326
 #: templates/alsijil/print/full_register.html:314
 msgid "Remarks"
 msgstr "Bemerkungen"
 
-#: forms.py:195 templates/alsijil/absences/register.html:9
+#: forms.py:200 templates/alsijil/absences/register.html:9
 #: templates/alsijil/class_register/lesson.html:260
 #: templates/alsijil/group_role/assigned_list.html:63
 msgid "Person"
 msgstr "Person"
 
-#: menus.py:6 preferences.py:8 templates/alsijil/print/full_register.html:16
+#: forms.py:270
+msgid "School term"
+msgstr ""
+
+#: forms.py:271
+#, fuzzy
+#| msgid "Lesson documentation"
+msgid "Has lesson documentation"
+msgstr "Stunden-Dokumentation"
+
+#: forms.py:273 templates/alsijil/class_register/week_view.html:106
+#: templates/alsijil/class_register/week_view.html:202
+#: templates/alsijil/print/full_register.html:169
+#: templates/alsijil/print/full_register.html:200
+msgid "Subject"
+msgstr "Fach"
+
+#: menus.py:6 preferences.py:9 templates/alsijil/print/full_register.html:16
 msgid "Class register"
 msgstr "Klassenbuch"
 
@@ -176,13 +206,20 @@ msgstr "Meine SchÃ¼lerinnen und SchÃ¼ler"
 msgid "Assign group role"
 msgstr "Gruppenrolle zuweisen"
 
-#: menus.py:82 models.py:63 templates/alsijil/excuse_type/list.html:8
+#: menus.py:82 templates/alsijil/class_register/all_objects.html:5
+#: templates/alsijil/class_register/all_objects.html:8
+#, fuzzy
+#| msgid "All assignments"
+msgid "All lessons"
+msgstr "Alle Zuweisungen"
+
+#: menus.py:93 models.py:63 templates/alsijil/excuse_type/list.html:8
 #: templates/alsijil/excuse_type/list.html:9
 #: templates/alsijil/partials/legend.html:26
 msgid "Excuse types"
 msgstr "Entschuldigungsarten"
 
-#: menus.py:93 models.py:204 models.py:361
+#: menus.py:104 models.py:204 models.py:361
 #: templates/alsijil/class_register/lesson.html:265
 #: templates/alsijil/extra_mark/list.html:8
 #: templates/alsijil/extra_mark/list.html:9
@@ -192,7 +229,7 @@ msgstr "Entschuldigungsarten"
 msgid "Extra marks"
 msgstr "ZusÃ¤tzliche Markierungen"
 
-#: menus.py:104
+#: menus.py:115
 msgid "Manage group roles"
 msgstr "Gruppenrollen verwalten"
 
@@ -253,6 +290,7 @@ msgstr "PersÃ¶nliche Notiz"
 
 #: models.py:239 templates/alsijil/class_register/lesson.html:114
 #: templates/alsijil/class_register/lesson.html:251
+#: templates/alsijil/class_register/person.html:31
 #: templates/alsijil/class_register/week_view.html:71
 #: templates/alsijil/class_register/week_view.html:317
 msgid "Personal notes"
@@ -285,7 +323,8 @@ msgstr "Gruppennotiz"
 msgid "Lesson documentation"
 msgstr "Stunden-Dokumentation"
 
-#: models.py:328 templates/alsijil/class_register/week_view.html:68
+#: models.py:328 templates/alsijil/class_register/person.html:27
+#: templates/alsijil/class_register/week_view.html:68
 msgid "Lesson documentations"
 msgstr "Stunden-Dokumentationen"
 
@@ -346,76 +385,84 @@ msgstr "Kann eine Absenz registrieren"
 msgid "Can list all personal note filters"
 msgstr "Kann alle Filter fÃ¼r persÃ¶nliche Notizen anzeigen"
 
-#: preferences.py:16
+#: preferences.py:17
 msgid "Block adding personal notes for cancelled lessons"
 msgstr "Blockiere das HinzufÃ¼gen von persÃ¶nlichen Notizen fÃ¼r ausgefallene Stunden"
 
-#: preferences.py:24
+#: preferences.py:25
 msgid "Allow users to view their own personal notes"
 msgstr "Erlaube Nutzern, ihre eigenen persÃ¶nlichen Notizen zu sehen"
 
-#: preferences.py:33
+#: preferences.py:34
 msgid "Allow primary group owners to register future absences for students in their groups"
 msgstr "Erlaube PrimÃ¤rgruppeninhabern Absenzen in der Zukunft fÃ¼r Mitglieder ihrer Gruppen zu registrieren"
 
 #: preferences.py:43
+msgid "Allow original teachers to edit their lessons although they are substituted"
+msgstr ""
+
+#: preferences.py:52
 msgid "Carry over data from first lesson period to the following lesson periods in lessons over multiple periods"
 msgstr "Daten von der ersten Stunde zu weiteren folgenden Stunden Ã¼bernehmen"
 
-#: preferences.py:46
+#: preferences.py:55
 msgid "This will carry over data only if the data in the following periods are empty."
 msgstr "Dies wird die Daten nur Ã¼bernehmen, wenn die Daten in den Folgestunden leer sind."
 
-#: preferences.py:54
+#: preferences.py:63
 msgid "Carry over personal notes to all following lesson periods on the same day."
-msgstr ""
-"PersÃ¶nliche Notizen in alle folgenden Unterrichtsstunden am gleichen Tag "
-"Ã¼bernehmen."
+msgstr "PersÃ¶nliche Notizen in alle folgenden Unterrichtsstunden am gleichen Tag Ã¼bernehmen."
 
-#: preferences.py:63
+#: preferences.py:72
 msgid "Allow teachers to open lesson periods on the same day and not just at the beginning of the period"
 msgstr "Erlaube LehrkrÃ¤ften, Unterrichtsstunden bereits am gleichen Tag und nicht erst zu Beginn der Stunde zu Ã¶ffnen"
 
-#: preferences.py:67
+#: preferences.py:76
 msgid "Lessons in the past are not affected by this setting, you can open them whenever you want."
 msgstr "Unterrichtsstunden in der Vergangenheit werden nicht durch diese Einstellung beeinflusst, sie kÃ¶nnen immer geÃ¶ffnet werden."
 
-#: preferences.py:76
+#: preferences.py:85
 msgid "Allow teachers to add data for lessons in holidays"
 msgstr "LehrkrÃ¤ften erlauben, Daten fÃ¼r Stunden in den Ferien hinzuzufÃ¼gen"
 
-#: preferences.py:85
+#: preferences.py:94
 msgid "Allow group owners to assign group roles to the parents of the group's members"
-msgstr ""
-"Erlaube Gruppenbesitzern, Gruppenrollen fÃ¼r Eltern von Gruppenmitgliedern "
-"zuzuweisen"
+msgstr "Erlaube Gruppenbesitzern, Gruppenrollen fÃ¼r Eltern von Gruppenmitgliedern zuzuweisen"
 
-#: preferences.py:94
+#: preferences.py:103
 msgid "Show assigned group roles in week view"
 msgstr "Zugewiesene Gruppenrollen in der Wochenansicht zeigen"
 
-#: preferences.py:95
+#: preferences.py:104
 msgid "Only week view of groups"
 msgstr "Nur Wochenansicht von Gruppen"
 
-#: preferences.py:103
+#: preferences.py:112
 msgid "Show assigned group roles in lesson view"
 msgstr "Zugewiesene Gruppenrollen in der Stundenansicht anzeigen"
 
-#: tables.py:17 tables.py:37 tables.py:62
+#: preferences.py:122
+msgid "Items per page in lessons table"
+msgstr ""
+
+#: preferences.py:126
+msgid "Each page must show at least one item."
+msgstr ""
+
+#: tables.py:19 tables.py:39 tables.py:64
 #: templates/alsijil/group_role/partials/assignment_options.html:13
 msgid "Edit"
 msgstr "Bearbeiten"
 
-#: tables.py:23 tables.py:43 tables.py:68
-#: templates/alsijil/class_register/person.html:260
+#: tables.py:25 tables.py:45 tables.py:70
+#: templates/alsijil/class_register/person.html:277
 #: templates/alsijil/group_role/partials/assignment_options.html:29
 msgid "Delete"
 msgstr "LÃ¶schen"
 
 #: templates/alsijil/absences/register.html:5
 #: templates/alsijil/absences/register.html:6
-#: templates/alsijil/class_register/person.html:30
+#: templates/alsijil/class_register/person.html:46
 #: templates/alsijil/class_register/week_view.html:332
 #: templates/alsijil/partials/persons_with_stats.html:115
 msgid "Register absence"
@@ -540,13 +587,13 @@ msgid "%(period)s. period"
 msgstr "%(period)s. Stunde"
 
 #: templates/alsijil/class_register/lesson.html:56
-#: templates/alsijil/class_register/person.html:190
+#: templates/alsijil/class_register/person.html:207
 #: templates/alsijil/class_register/week_view.html:151
 #: templates/alsijil/class_register/week_view.html:214
 #: templates/alsijil/class_register/week_view.html:268
 #: templates/alsijil/partials/lesson_status_icon.html:16
 #: templates/alsijil/print/full_register.html:335
-#: templates/alsijil/print/full_register.html:415
+#: templates/alsijil/print/full_register.html:415 util/alsijil_helpers.py:316
 msgid "Event"
 msgstr "Veranstaltung"
 
@@ -606,7 +653,7 @@ msgid "Late persons:"
 msgstr "VerspÃ¤tete Personen:"
 
 #: templates/alsijil/class_register/lesson.html:262
-#: templates/alsijil/class_register/person.html:109
+#: templates/alsijil/class_register/person.html:125
 #: templates/alsijil/partials/persons_with_stats.html:17
 #: templates/alsijil/partials/persons_with_stats.html:34
 #: templates/alsijil/partials/persons_with_stats.html:91
@@ -650,16 +697,16 @@ msgstr ""
 "                Diese Stunde ist in den Ferien und kann somit nicht bearbeitet werden.\n"
 "              "
 
-#: templates/alsijil/class_register/person.html:8
+#: templates/alsijil/class_register/person.html:5
 msgid "Class register: person"
 msgstr "Klassenbuch: Person"
 
-#: templates/alsijil/class_register/person.html:16
+#: templates/alsijil/class_register/person.html:13
 #: templates/alsijil/class_register/students_list.html:10
 msgid "Back"
 msgstr "ZurÃ¼ck"
 
-#: templates/alsijil/class_register/person.html:19
+#: templates/alsijil/class_register/person.html:16
 #, python-format
 msgid ""
 "\n"
@@ -670,36 +717,36 @@ msgstr ""
 "    KlassenbuchÃ¼bersicht fÃ¼r %(person)s\n"
 "  "
 
-#: templates/alsijil/class_register/person.html:36
+#: templates/alsijil/class_register/person.html:52
 #: templates/alsijil/partials/legend.html:14
 msgid "Unexcused absences"
 msgstr "Unentschuldigte Fehlzeiten"
 
-#: templates/alsijil/class_register/person.html:45
-#: templates/alsijil/class_register/person.html:64
-#: templates/alsijil/class_register/person.html:201
-#: templates/alsijil/class_register/person.html:248
+#: templates/alsijil/class_register/person.html:61
+#: templates/alsijil/class_register/person.html:80
+#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:265
 msgid "Mark as"
 msgstr "Markiere als"
 
-#: templates/alsijil/class_register/person.html:48
-#: templates/alsijil/class_register/person.html:67
-#: templates/alsijil/class_register/person.html:204
-#: templates/alsijil/class_register/person.html:210
-#: templates/alsijil/class_register/person.html:251
-#: templates/alsijil/class_register/person.html:257
+#: templates/alsijil/class_register/person.html:64
+#: templates/alsijil/class_register/person.html:83
+#: templates/alsijil/class_register/person.html:221
+#: templates/alsijil/class_register/person.html:227
+#: templates/alsijil/class_register/person.html:268
+#: templates/alsijil/class_register/person.html:274
 msgid "Delete note"
 msgstr "Notiz lÃ¶schen"
 
-#: templates/alsijil/class_register/person.html:77
+#: templates/alsijil/class_register/person.html:93
 msgid "There are no unexcused lessons."
 msgstr "Es gibt keine unentschuldigten Unterrichtsstunden."
 
-#: templates/alsijil/class_register/person.html:82
+#: templates/alsijil/class_register/person.html:98
 msgid "Statistics on absences, tardiness and remarks"
 msgstr "Statistiken zu Fehlzeiten, VerspÃ¤tungen und Bemerkungen"
 
-#: templates/alsijil/class_register/person.html:91
+#: templates/alsijil/class_register/person.html:107
 #: templates/alsijil/partials/legend.html:10
 #: templates/alsijil/partials/persons_with_stats.html:16
 #: templates/alsijil/partials/persons_with_stats.html:26
@@ -708,34 +755,36 @@ msgstr "Statistiken zu Fehlzeiten, VerspÃ¤tungen und Bemerkungen"
 msgid "Absences"
 msgstr "Fehlstunden"
 
-#: templates/alsijil/class_register/person.html:95
+#: templates/alsijil/class_register/person.html:111
 #: templates/alsijil/print/full_register.html:274
 msgid "thereof"
 msgstr "davon"
 
-#: templates/alsijil/class_register/person.html:105
+#: templates/alsijil/class_register/person.html:121
 #: templates/alsijil/partials/persons_with_stats.html:86
 #: templates/alsijil/print/full_register.html:81
 #: templates/alsijil/print/full_register.html:283
 msgid "Unexcused"
 msgstr "Unentschuldigt"
 
-#: templates/alsijil/class_register/person.html:126
+#: templates/alsijil/class_register/person.html:142
 #: templates/alsijil/print/full_register.html:304
 msgid "Relevant personal notes"
 msgstr "Relevante persÃ¶nliche Notizen"
 
-#: templates/alsijil/class_register/person.html:142
+#: templates/alsijil/class_register/person.html:158
 #, python-format
-msgid "Week %(week)s"
-msgstr "Woche %(week)s"
+msgid ""
+"Week\n"
+"                        %(week)s"
+msgstr ""
 
-#: templates/alsijil/class_register/person.html:150
-#: templates/alsijil/class_register/person.html:168
+#: templates/alsijil/class_register/person.html:167
+#: templates/alsijil/class_register/person.html:185
 msgid "Mark all as"
 msgstr "Alle als markieren"
 
-#: templates/alsijil/class_register/person.html:233
+#: templates/alsijil/class_register/person.html:250
 #, python-format
 msgid "%(late)s' late"
 msgstr "%(late)s' verspÃ¤tet"
@@ -763,13 +812,6 @@ msgstr ""
 msgid "Period"
 msgstr "Stunde"
 
-#: templates/alsijil/class_register/week_view.html:106
-#: templates/alsijil/class_register/week_view.html:202
-#: templates/alsijil/print/full_register.html:169
-#: templates/alsijil/print/full_register.html:200
-msgid "Subject"
-msgstr "Fach"
-
 #: templates/alsijil/class_register/week_view.html:107
 #: templates/alsijil/class_register/week_view.html:231
 msgid "Teachers"
@@ -902,8 +944,7 @@ msgid ""
 "    "
 msgstr ""
 "\n"
-"      Sie kÃ¶nnen zusÃ¤tzliche Aktionen fÃ¼r jede Gruppenrollenzuweisung "
-"aufrufen, \n"
+"      Sie kÃ¶nnen zusÃ¤tzliche Aktionen fÃ¼r jede Gruppenrollenzuweisung aufrufen, \n"
 "wenn Sie auf den Namen der entsprechenden Person klicken.\n"
 "    "
 
@@ -911,6 +952,10 @@ msgstr ""
 msgid "Stop"
 msgstr "Beenden"
 
+#: templates/alsijil/notifications/check.html:1
+msgid "Please check if the following class register entries are complete and correct:"
+msgstr ""
+
 #: templates/alsijil/partials/absences.html:6
 #: templates/alsijil/partials/persons_with_stats.html:27
 #: templates/alsijil/partials/persons_with_stats.html:44
@@ -968,6 +1013,28 @@ msgstr "Vertretung"
 msgid "e"
 msgstr "e"
 
+#: templates/alsijil/partials/objects_table.html:4
+#, fuzzy
+#| msgid "Lesson start"
+msgid "Lesson filter"
+msgstr "Unterrichtsbeginn"
+
+#: templates/alsijil/partials/objects_table.html:9
+#, fuzzy
+#| msgid "Add filter"
+msgid "Update filters"
+msgstr "Filter hinzufÃ¼gen"
+
+#: templates/alsijil/partials/objects_table.html:22
+#, fuzzy
+#| msgid "Lesson start"
+msgid "Lesson table"
+msgstr "Unterrichtsbeginn"
+
+#: templates/alsijil/partials/objects_table.html:31
+msgid "Execute"
+msgstr ""
+
 #: templates/alsijil/partials/persons_with_stats.html:7
 msgid "No students available."
 msgstr "Keine SchÃ¼lerinnen und SchÃ¼ler verfÃ¼gbar."
@@ -1157,99 +1224,107 @@ msgid "Yes"
 msgstr "Ja"
 
 #: templates/alsijil/print/full_register.html:373
-msgid "Lesson documentation for week"
-msgstr "Unterrichtsdokumentation fÃ¼r Woche"
+#, fuzzy
+#| msgid "Week view"
+msgid "Week"
+msgstr "Wochenansicht"
 
 #: templates/alsijil/print/full_register.html:383
 msgid "Notes"
 msgstr "Notizen"
 
-#: views.py:96
+#: views.py:108
 msgid "You either selected an invalid lesson or there is currently no lesson in progress."
 msgstr ""
 "Sie haben eine ungÃ¼ltige Stunde ausgewÃ¤hlt oder es\n"
 "      lÃ¤uft momentan keine Stunde."
 
-#: views.py:129
+#: views.py:141
 msgid "You are not allowed to create a lesson documentation for a lesson in the future."
 msgstr "Ihnen ist es nicht erlaubt, eine Eintragung fÃ¼r eine Unterrichtsstunde in der Zukunft vorzunehmen."
 
-#: views.py:211
+#: views.py:225
 msgid "The lesson documentation has been saved."
 msgstr "Die Stunden-Dokumentation wurde gespeichert."
 
-#: views.py:245
+#: views.py:259
 msgid "The personal notes have been saved."
 msgstr "Die persÃ¶nlichen Notizen wurden gespeichert."
 
-#: views.py:766
+#: views.py:782
 msgid "The absences have been marked as excused."
 msgstr "Die Fehlzeiten wurden als entschuldigt markiert."
 
-#: views.py:781
+#: views.py:797
 msgid "The absence has been marked as excused."
 msgstr "Die Fehlzeit wurde als entschuldigt markiert."
 
-#: views.py:958
+#: views.py:988
 msgid "The absence has been saved."
 msgstr "Die Abwesenheit wurde gespeichert."
 
-#: views.py:979
+#: views.py:1009
 msgid "The personal note has been deleted."
 msgstr "Die persÃ¶nliche Notiz wurde gelÃ¶scht."
 
-#: views.py:1001
+#: views.py:1031
 msgid "The extra mark has been created."
 msgstr "Die zusÃ¤tzliche Markierung wurde erstellt."
 
-#: views.py:1013
+#: views.py:1043
 msgid "The extra mark has been saved."
 msgstr "Die zusÃ¤tzliche Markierung wurde gespeichert."
 
-#: views.py:1024
+#: views.py:1054
 msgid "The extra mark has been deleted."
 msgstr "Die zusÃ¤tzliche Markierung wurde gelÃ¶scht."
 
-#: views.py:1045
+#: views.py:1075
 msgid "The excuse type has been created."
 msgstr "Die Entschuldigungsart wurde erstellt."
 
-#: views.py:1057
+#: views.py:1087
 msgid "The excuse type has been saved."
 msgstr "Die Entschuldigunsart wurde gespeichert."
 
-#: views.py:1068
+#: views.py:1098
 msgid "The excuse type has been deleted."
 msgstr "Die Entschuldigungsart wurde gelÃ¶scht."
 
-#: views.py:1089
+#: views.py:1119
 msgid "The group role has been created."
 msgstr "Die Gruppenrolle wurde erstellt."
 
-#: views.py:1101
+#: views.py:1131
 msgid "The group role has been saved."
 msgstr "Die Gruppenrolle wurde gespeichert."
 
-#: views.py:1112
+#: views.py:1142
 msgid "The group role has been deleted."
 msgstr "Die Gruppenrolle wurde gelÃ¶scht."
 
-#: views.py:1145 views.py:1177
+#: views.py:1175 views.py:1207
 msgid "The group role has been assigned."
 msgstr "Die Gruppenrolle wurde zugewiesen."
 
-#: views.py:1196
+#: views.py:1226
 msgid "The group role assignment has been saved."
 msgstr "Die Gruppenrollenzuweisung wurde gespeichert."
 
-#: views.py:1217
+#: views.py:1247
 msgid "The group role assignment has been stopped."
 msgstr "Die Gruppenrollenzuweisung wurde beendet."
 
-#: views.py:1230
+#: views.py:1260
 msgid "The group role assignment has been deleted."
 msgstr "Die Gruppenrollenzuweisung wurde gelÃ¶scht."
 
+#~ msgid "Week %(week)s"
+#~ msgstr "Woche %(week)s"
+
+#~ msgid "Lesson documentation for week"
+#~ msgstr "Unterrichtsdokumentation fÃ¼r Woche"
+
 #~ msgid ""
 #~ "\n"
 #~ "          Previous %(subject)s lesson\n"
@@ -1292,9 +1367,6 @@ msgstr "Die Gruppenrollenzuweisung wurde gelÃ¶scht."
 #~ msgid "All personal note filters"
 #~ msgstr "Alle Filter fÃ¼r persÃ¶nliche Notizen"
 
-#~ msgid "Add filter"
-#~ msgstr "Filter hinzufÃ¼gen"
-
 #~ msgid "Update personal note filter"
 #~ msgstr "Filter fÃ¼r persÃ¶nliche Notizen aktualisieren"
 
diff --git a/aleksis/apps/alsijil/locale/fr/LC_MESSAGES/django.po b/aleksis/apps/alsijil/locale/fr/LC_MESSAGES/django.po
index e935c9c08453dd3472ab7f8c06a150e022b5e31c..f54044d30e4bb531327b9d593136b55a51f57424 100644
--- a/aleksis/apps/alsijil/locale/fr/LC_MESSAGES/django.po
+++ b/aleksis/apps/alsijil/locale/fr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-24 12:02+0100\n"
+"POT-Creation-Date: 2021-03-18 14:33+0100\n"
 "PO-Revision-Date: 2020-07-26 14:08+0000\n"
 "Last-Translator: Marlene Grundey <grundema@katharineum.de>\n"
 "Language-Team: French <https://translate.edugit.org/projects/aleksis/aleksis-app-alsijil/fr/>\n"
@@ -18,120 +18,134 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=n > 1;\n"
 "X-Generator: Weblate 4.0.1\n"
 
-#: data_checks.py:15
+#: actions.py:30
+msgid "{} wants you to check some class register entries."
+msgstr ""
+
+#: actions.py:48
+#, python-brace-format
+msgid "We have successfully sent notifications to {count_teachers} persons for {count_items} lessons."
+msgstr ""
+
+#: actions.py:54
+msgid "Notify teacher to check data"
+msgstr ""
+
+#: data_checks.py:12
 msgid "Delete object"
 msgstr ""
 
-#: data_checks.py:25
+#: data_checks.py:22
 msgid "Set current groups"
 msgstr ""
 
-#: data_checks.py:36
+#: data_checks.py:33
 #, fuzzy
 #| msgid "Relevant personal notes"
 msgid "Reset personal note to defaults"
 msgstr "Notes personnelles importantes"
 
-#: data_checks.py:48
+#: data_checks.py:45
 msgid "Ensure that there are no personal notes in cancelled lessons"
 msgstr ""
 
-#: data_checks.py:49
+#: data_checks.py:46
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The personal note is related to a cancelled lesson."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: data_checks.py:76
+#: data_checks.py:73
 msgid "Ensure that 'groups_of_person' is set for every personal note"
 msgstr ""
 
-#: data_checks.py:77
+#: data_checks.py:74
 msgid "The personal note has no group in 'groups_of_person'."
 msgstr ""
 
-#: data_checks.py:111
+#: data_checks.py:99
 msgid "Ensure that there are no filled out lesson documentations on holidays"
 msgstr ""
 
-#: data_checks.py:112
+#: data_checks.py:100
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The lesson documentation is on holidays."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: data_checks.py:147
+#: data_checks.py:133
 msgid "Ensure that there are no filled out personal notes on holidays"
 msgstr ""
 
-#: data_checks.py:148
+#: data_checks.py:134
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The personal note is on holidays."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: data_checks.py:176
+#: data_checks.py:162
 msgid "Ensure that there are no excused personal notes without an absence"
 msgstr ""
 
-#: data_checks.py:177
+#: data_checks.py:163
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The personal note is marked as excused, but not as absent."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: forms.py:36
+#: forms.py:41
 msgid "Homework for the next lesson"
 msgstr ""
 
-#: forms.py:61 forms.py:185 templates/alsijil/print/full_register.html:199
+#: forms.py:66 forms.py:190 forms.py:272
+#: templates/alsijil/print/full_register.html:199
 msgid "Group"
 msgstr "Groupe"
 
-#: forms.py:64 templates/alsijil/print/full_register.html:170
+#: forms.py:69 templates/alsijil/print/full_register.html:170
 #: templates/alsijil/print/full_register.html:201
 msgid "Teacher"
 msgstr "Profs"
 
-#: forms.py:79
+#: forms.py:84
 msgid "You can't select a group and a teacher both."
 msgstr ""
 
-#: forms.py:133 models.py:397
+#: forms.py:138 forms.py:274 models.py:397
 #: templates/alsijil/group_role/assigned_list.html:64
 msgid "Start date"
 msgstr "Date de dÃ©but"
 
-#: forms.py:134 models.py:401
+#: forms.py:139 forms.py:275 models.py:401
 #: templates/alsijil/group_role/assigned_list.html:65
 msgid "End date"
 msgstr "Date de fin"
 
-#: forms.py:135
+#: forms.py:140
 #, fuzzy
 #| msgid "From period"
 msgid "Start period"
 msgstr "De la pÃ©riode"
 
-#: forms.py:136
+#: forms.py:141
 #, fuzzy
 #| msgid "From period"
 msgid "End period"
 msgstr "De la pÃ©riode"
 
-#: forms.py:137 templates/alsijil/absences/register_confirm.html:52
+#: forms.py:142 templates/alsijil/absences/register_confirm.html:52
 #: templates/alsijil/class_register/lesson.html:261
-#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:235
 #: templates/alsijil/class_register/week_view.html:342
 #: templates/alsijil/print/full_register.html:75
 #: templates/alsijil/print/full_register.html:312
 msgid "Absent"
 msgstr "Absent(e)"
 
-#: forms.py:138 templates/alsijil/absences/register_confirm.html:56
+#: forms.py:143 templates/alsijil/absences/register_confirm.html:56
 #: templates/alsijil/class_register/lesson.html:263
-#: templates/alsijil/class_register/person.html:97
-#: templates/alsijil/class_register/person.html:226
+#: templates/alsijil/class_register/person.html:113
+#: templates/alsijil/class_register/person.html:243
 #: templates/alsijil/partials/mark_as_buttons.html:2
 #: templates/alsijil/partials/mark_as_buttons.html:3
 #: templates/alsijil/partials/persons_with_stats.html:74
@@ -140,7 +154,7 @@ msgstr "Absent(e)"
 msgid "Excused"
 msgstr "ExcusÃ©"
 
-#: forms.py:140 models.py:62 models.py:199
+#: forms.py:145 models.py:62 models.py:199
 #: templates/alsijil/class_register/lesson.html:264
 #: templates/alsijil/class_register/lesson.html:305
 #, fuzzy
@@ -148,19 +162,36 @@ msgstr "ExcusÃ©"
 msgid "Excuse type"
 msgstr "ExcusÃ©"
 
-#: forms.py:145 templates/alsijil/class_register/lesson.html:266
+#: forms.py:150 templates/alsijil/class_register/lesson.html:266
 #: templates/alsijil/class_register/lesson.html:326
 #: templates/alsijil/print/full_register.html:314
 msgid "Remarks"
 msgstr "Remarque"
 
-#: forms.py:195 templates/alsijil/absences/register.html:9
+#: forms.py:200 templates/alsijil/absences/register.html:9
 #: templates/alsijil/class_register/lesson.html:260
 #: templates/alsijil/group_role/assigned_list.html:63
 msgid "Person"
 msgstr "Personne"
 
-#: menus.py:6 preferences.py:8 templates/alsijil/print/full_register.html:16
+#: forms.py:270
+msgid "School term"
+msgstr ""
+
+#: forms.py:271
+#, fuzzy
+#| msgid "Lesson documentation"
+msgid "Has lesson documentation"
+msgstr "Documentation de cours"
+
+#: forms.py:273 templates/alsijil/class_register/week_view.html:106
+#: templates/alsijil/class_register/week_view.html:202
+#: templates/alsijil/print/full_register.html:169
+#: templates/alsijil/print/full_register.html:200
+msgid "Subject"
+msgstr "Sujet"
+
+#: menus.py:6 preferences.py:9 templates/alsijil/print/full_register.html:16
 msgid "Class register"
 msgstr "Registre de la classe"
 
@@ -197,7 +228,12 @@ msgstr ""
 msgid "Assign group role"
 msgstr "Personnes en groupe"
 
-#: menus.py:82 models.py:63 templates/alsijil/excuse_type/list.html:8
+#: menus.py:82 templates/alsijil/class_register/all_objects.html:5
+#: templates/alsijil/class_register/all_objects.html:8
+msgid "All lessons"
+msgstr ""
+
+#: menus.py:93 models.py:63 templates/alsijil/excuse_type/list.html:8
 #: templates/alsijil/excuse_type/list.html:9
 #: templates/alsijil/partials/legend.html:26
 #, fuzzy
@@ -205,7 +241,7 @@ msgstr "Personnes en groupe"
 msgid "Excuse types"
 msgstr "ExcusÃ©"
 
-#: menus.py:93 models.py:204 models.py:361
+#: menus.py:104 models.py:204 models.py:361
 #: templates/alsijil/class_register/lesson.html:265
 #: templates/alsijil/extra_mark/list.html:8
 #: templates/alsijil/extra_mark/list.html:9
@@ -215,7 +251,7 @@ msgstr "ExcusÃ©"
 msgid "Extra marks"
 msgstr ""
 
-#: menus.py:104
+#: menus.py:115
 msgid "Manage group roles"
 msgstr ""
 
@@ -290,6 +326,7 @@ msgstr "Notes personnelles"
 
 #: models.py:239 templates/alsijil/class_register/lesson.html:114
 #: templates/alsijil/class_register/lesson.html:251
+#: templates/alsijil/class_register/person.html:31
 #: templates/alsijil/class_register/week_view.html:71
 #: templates/alsijil/class_register/week_view.html:317
 msgid "Personal notes"
@@ -324,7 +361,8 @@ msgstr "Groupe"
 msgid "Lesson documentation"
 msgstr "Documentation de cours"
 
-#: models.py:328 templates/alsijil/class_register/week_view.html:68
+#: models.py:328 templates/alsijil/class_register/person.html:27
+#: templates/alsijil/class_register/week_view.html:68
 #, fuzzy
 #| msgid "Lesson documentation"
 msgid "Lesson documentations"
@@ -399,74 +437,86 @@ msgstr "Registre de Absence"
 msgid "Can list all personal note filters"
 msgstr "Liste de filtres de notes personnelles"
 
-#: preferences.py:16
+#: preferences.py:17
 msgid "Block adding personal notes for cancelled lessons"
 msgstr ""
 
-#: preferences.py:24
+#: preferences.py:25
 msgid "Allow users to view their own personal notes"
 msgstr ""
 
-#: preferences.py:33
+#: preferences.py:34
 msgid "Allow primary group owners to register future absences for students in their groups"
 msgstr ""
 
 #: preferences.py:43
+msgid "Allow original teachers to edit their lessons although they are substituted"
+msgstr ""
+
+#: preferences.py:52
 msgid "Carry over data from first lesson period to the following lesson periods in lessons over multiple periods"
 msgstr ""
 
-#: preferences.py:46
+#: preferences.py:55
 msgid "This will carry over data only if the data in the following periods are empty."
 msgstr ""
 
-#: preferences.py:54
+#: preferences.py:63
 msgid "Carry over personal notes to all following lesson periods on the same day."
 msgstr ""
 
-#: preferences.py:63
+#: preferences.py:72
 msgid "Allow teachers to open lesson periods on the same day and not just at the beginning of the period"
 msgstr ""
 
-#: preferences.py:67
+#: preferences.py:76
 msgid "Lessons in the past are not affected by this setting, you can open them whenever you want."
 msgstr ""
 
-#: preferences.py:76
+#: preferences.py:85
 #, fuzzy
 #| msgid "Teachers and lessons in group"
 msgid "Allow teachers to add data for lessons in holidays"
 msgstr "Profs et cours en groupe"
 
-#: preferences.py:85
+#: preferences.py:94
 msgid "Allow group owners to assign group roles to the parents of the group's members"
 msgstr ""
 
-#: preferences.py:94
+#: preferences.py:103
 msgid "Show assigned group roles in week view"
 msgstr ""
 
-#: preferences.py:95
+#: preferences.py:104
 msgid "Only week view of groups"
 msgstr ""
 
-#: preferences.py:103
+#: preferences.py:112
 msgid "Show assigned group roles in lesson view"
 msgstr ""
 
-#: tables.py:17 tables.py:37 tables.py:62
+#: preferences.py:122
+msgid "Items per page in lessons table"
+msgstr ""
+
+#: preferences.py:126
+msgid "Each page must show at least one item."
+msgstr ""
+
+#: tables.py:19 tables.py:39 tables.py:64
 #: templates/alsijil/group_role/partials/assignment_options.html:13
 msgid "Edit"
 msgstr ""
 
-#: tables.py:23 tables.py:43 tables.py:68
-#: templates/alsijil/class_register/person.html:260
+#: tables.py:25 tables.py:45 tables.py:70
+#: templates/alsijil/class_register/person.html:277
 #: templates/alsijil/group_role/partials/assignment_options.html:29
 msgid "Delete"
 msgstr ""
 
 #: templates/alsijil/absences/register.html:5
 #: templates/alsijil/absences/register.html:6
-#: templates/alsijil/class_register/person.html:30
+#: templates/alsijil/class_register/person.html:46
 #: templates/alsijil/class_register/week_view.html:332
 #: templates/alsijil/partials/persons_with_stats.html:115
 msgid "Register absence"
@@ -598,13 +648,13 @@ msgid "%(period)s. period"
 msgstr "De la pÃ©riode"
 
 #: templates/alsijil/class_register/lesson.html:56
-#: templates/alsijil/class_register/person.html:190
+#: templates/alsijil/class_register/person.html:207
 #: templates/alsijil/class_register/week_view.html:151
 #: templates/alsijil/class_register/week_view.html:214
 #: templates/alsijil/class_register/week_view.html:268
 #: templates/alsijil/partials/lesson_status_icon.html:16
 #: templates/alsijil/print/full_register.html:335
-#: templates/alsijil/print/full_register.html:415
+#: templates/alsijil/print/full_register.html:415 util/alsijil_helpers.py:316
 msgid "Event"
 msgstr ""
 
@@ -662,7 +712,7 @@ msgid "Late persons:"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:262
-#: templates/alsijil/class_register/person.html:109
+#: templates/alsijil/class_register/person.html:125
 #: templates/alsijil/partials/persons_with_stats.html:17
 #: templates/alsijil/partials/persons_with_stats.html:34
 #: templates/alsijil/partials/persons_with_stats.html:91
@@ -707,18 +757,18 @@ msgstr ""
 "            Il n' y a pas des cours pour le groupe sÃ©lectionnÃ©, les profs, le salle ou le temps.\n"
 "          "
 
-#: templates/alsijil/class_register/person.html:8
+#: templates/alsijil/class_register/person.html:5
 #, fuzzy
 #| msgid "Class register"
 msgid "Class register: person"
 msgstr "Registre de la classe"
 
-#: templates/alsijil/class_register/person.html:16
+#: templates/alsijil/class_register/person.html:13
 #: templates/alsijil/class_register/students_list.html:10
 msgid "Back"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:19
+#: templates/alsijil/class_register/person.html:16
 #, python-format
 msgid ""
 "\n"
@@ -726,38 +776,38 @@ msgid ""
 "  "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:36
+#: templates/alsijil/class_register/person.html:52
 #: templates/alsijil/partials/legend.html:14
 #, fuzzy
 #| msgid "Unexcused"
 msgid "Unexcused absences"
 msgstr "injustifiÃ©(e)"
 
-#: templates/alsijil/class_register/person.html:45
-#: templates/alsijil/class_register/person.html:64
-#: templates/alsijil/class_register/person.html:201
-#: templates/alsijil/class_register/person.html:248
+#: templates/alsijil/class_register/person.html:61
+#: templates/alsijil/class_register/person.html:80
+#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:265
 msgid "Mark as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:48
-#: templates/alsijil/class_register/person.html:67
-#: templates/alsijil/class_register/person.html:204
-#: templates/alsijil/class_register/person.html:210
-#: templates/alsijil/class_register/person.html:251
-#: templates/alsijil/class_register/person.html:257
+#: templates/alsijil/class_register/person.html:64
+#: templates/alsijil/class_register/person.html:83
+#: templates/alsijil/class_register/person.html:221
+#: templates/alsijil/class_register/person.html:227
+#: templates/alsijil/class_register/person.html:268
+#: templates/alsijil/class_register/person.html:274
 msgid "Delete note"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:77
+#: templates/alsijil/class_register/person.html:93
 msgid "There are no unexcused lessons."
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:82
+#: templates/alsijil/class_register/person.html:98
 msgid "Statistics on absences, tardiness and remarks"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:91
+#: templates/alsijil/class_register/person.html:107
 #: templates/alsijil/partials/legend.html:10
 #: templates/alsijil/partials/persons_with_stats.html:16
 #: templates/alsijil/partials/persons_with_stats.html:26
@@ -766,34 +816,36 @@ msgstr ""
 msgid "Absences"
 msgstr "Absences"
 
-#: templates/alsijil/class_register/person.html:95
+#: templates/alsijil/class_register/person.html:111
 #: templates/alsijil/print/full_register.html:274
 msgid "thereof"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:105
+#: templates/alsijil/class_register/person.html:121
 #: templates/alsijil/partials/persons_with_stats.html:86
 #: templates/alsijil/print/full_register.html:81
 #: templates/alsijil/print/full_register.html:283
 msgid "Unexcused"
 msgstr "injustifiÃ©(e)"
 
-#: templates/alsijil/class_register/person.html:126
+#: templates/alsijil/class_register/person.html:142
 #: templates/alsijil/print/full_register.html:304
 msgid "Relevant personal notes"
 msgstr "Notes personnelles importantes"
 
-#: templates/alsijil/class_register/person.html:142
+#: templates/alsijil/class_register/person.html:158
 #, python-format
-msgid "Week %(week)s"
+msgid ""
+"Week\n"
+"                        %(week)s"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:150
-#: templates/alsijil/class_register/person.html:168
+#: templates/alsijil/class_register/person.html:167
+#: templates/alsijil/class_register/person.html:185
 msgid "Mark all as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:233
+#: templates/alsijil/class_register/person.html:250
 #, python-format
 msgid "%(late)s' late"
 msgstr ""
@@ -819,13 +871,6 @@ msgstr ""
 msgid "Period"
 msgstr "PÃ©riode"
 
-#: templates/alsijil/class_register/week_view.html:106
-#: templates/alsijil/class_register/week_view.html:202
-#: templates/alsijil/print/full_register.html:169
-#: templates/alsijil/print/full_register.html:200
-msgid "Subject"
-msgstr "Sujet"
-
 #: templates/alsijil/class_register/week_view.html:107
 #: templates/alsijil/class_register/week_view.html:231
 msgid "Teachers"
@@ -969,6 +1014,10 @@ msgstr ""
 msgid "Stop"
 msgstr ""
 
+#: templates/alsijil/notifications/check.html:1
+msgid "Please check if the following class register entries are complete and correct:"
+msgstr ""
+
 #: templates/alsijil/partials/absences.html:6
 #: templates/alsijil/partials/persons_with_stats.html:27
 #: templates/alsijil/partials/persons_with_stats.html:44
@@ -1028,6 +1077,28 @@ msgstr ""
 msgid "e"
 msgstr "e"
 
+#: templates/alsijil/partials/objects_table.html:4
+#, fuzzy
+#| msgid "Lesson start"
+msgid "Lesson filter"
+msgstr "DÃ©but de cours"
+
+#: templates/alsijil/partials/objects_table.html:9
+#, fuzzy
+#| msgid "Personal note filters"
+msgid "Update filters"
+msgstr "Filtres de notes personnelles"
+
+#: templates/alsijil/partials/objects_table.html:22
+#, fuzzy
+#| msgid "Lesson start"
+msgid "Lesson table"
+msgstr "DÃ©but de cours"
+
+#: templates/alsijil/partials/objects_table.html:31
+msgid "Execute"
+msgstr ""
+
 #: templates/alsijil/partials/persons_with_stats.html:7
 msgid "No students available."
 msgstr ""
@@ -1210,120 +1281,125 @@ msgstr "Oui"
 
 #: templates/alsijil/print/full_register.html:373
 #, fuzzy
-#| msgid "Lesson documentation for calendar week"
-msgid "Lesson documentation for week"
-msgstr "Documentation de cours pour la semaine calendrier"
+#| msgid "Week view"
+msgid "Week"
+msgstr "Vue de semaine"
 
 #: templates/alsijil/print/full_register.html:383
 msgid "Notes"
 msgstr "Notes"
 
-#: views.py:96
+#: views.py:108
 msgid "You either selected an invalid lesson or there is currently no lesson in progress."
 msgstr ""
 
-#: views.py:129
+#: views.py:141
 msgid "You are not allowed to create a lesson documentation for a lesson in the future."
 msgstr ""
 
-#: views.py:211
+#: views.py:225
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The lesson documentation has been saved."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:245
+#: views.py:259
 msgid "The personal notes have been saved."
 msgstr ""
 
-#: views.py:766
+#: views.py:782
 msgid "The absences have been marked as excused."
 msgstr ""
 
-#: views.py:781
+#: views.py:797
 msgid "The absence has been marked as excused."
 msgstr ""
 
-#: views.py:958
+#: views.py:988
 msgid "The absence has been saved."
 msgstr ""
 
-#: views.py:979
+#: views.py:1009
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The personal note has been deleted."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1001
+#: views.py:1031
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The extra mark has been created."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1013
+#: views.py:1043
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The extra mark has been saved."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1024
+#: views.py:1054
 msgid "The extra mark has been deleted."
 msgstr ""
 
-#: views.py:1045
+#: views.py:1075
 msgid "The excuse type has been created."
 msgstr ""
 
-#: views.py:1057
+#: views.py:1087
 msgid "The excuse type has been saved."
 msgstr ""
 
-#: views.py:1068
+#: views.py:1098
 msgid "The excuse type has been deleted."
 msgstr ""
 
-#: views.py:1089
+#: views.py:1119
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The group role has been created."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1101
+#: views.py:1131
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The group role has been saved."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1112
+#: views.py:1142
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The group role has been deleted."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1145 views.py:1177
+#: views.py:1175 views.py:1207
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The group role has been assigned."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1196
+#: views.py:1226
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The group role assignment has been saved."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1217
+#: views.py:1247
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The group role assignment has been stopped."
 msgstr "Documentation de cours pour la semaine calendrier"
 
-#: views.py:1230
+#: views.py:1260
 #, fuzzy
 #| msgid "Lesson documentation for calendar week"
 msgid "The group role assignment has been deleted."
 msgstr "Documentation de cours pour la semaine calendrier"
 
+#, fuzzy
+#~| msgid "Lesson documentation for calendar week"
+#~ msgid "Lesson documentation for week"
+#~ msgstr "Documentation de cours pour la semaine calendrier"
+
 #~ msgid "Personal note filters"
 #~ msgstr "Filtres de notes personnelles"
 
@@ -1343,11 +1419,6 @@ msgstr "Documentation de cours pour la semaine calendrier"
 #~ msgid "All personal note filters"
 #~ msgstr "Filtres de notes personnelles"
 
-#, fuzzy
-#~| msgid "Personal note filters"
-#~ msgid "Update personal note filter"
-#~ msgstr "Filtres de notes personnelles"
-
 #, fuzzy
 #~| msgid "Personal note filters"
 #~ msgid "Create personal note filter"
diff --git a/aleksis/apps/alsijil/locale/la/LC_MESSAGES/django.po b/aleksis/apps/alsijil/locale/la/LC_MESSAGES/django.po
index ada9240dfcf86e89cfbf1799fdfff0271223e755..ee4c6fdd4cda12d20f66a70621d5b62fbfe6f557 100644
--- a/aleksis/apps/alsijil/locale/la/LC_MESSAGES/django.po
+++ b/aleksis/apps/alsijil/locale/la/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-24 12:02+0100\n"
+"POT-Creation-Date: 2021-03-18 14:33+0100\n"
 "PO-Revision-Date: 2020-07-26 14:08+0000\n"
 "Last-Translator: Julian <leuckerj@gmail.com>\n"
 "Language-Team: Latin <https://translate.edugit.org/projects/aleksis/aleksis-app-alsijil/la/>\n"
@@ -18,106 +18,120 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
 "X-Generator: Weblate 4.0.1\n"
 
-#: data_checks.py:15
+#: actions.py:30
+msgid "{} wants you to check some class register entries."
+msgstr ""
+
+#: actions.py:48
+#, python-brace-format
+msgid "We have successfully sent notifications to {count_teachers} persons for {count_items} lessons."
+msgstr ""
+
+#: actions.py:54
+msgid "Notify teacher to check data"
+msgstr ""
+
+#: data_checks.py:12
 msgid "Delete object"
 msgstr ""
 
-#: data_checks.py:25
+#: data_checks.py:22
 msgid "Set current groups"
 msgstr ""
 
-#: data_checks.py:36
+#: data_checks.py:33
 msgid "Reset personal note to defaults"
 msgstr ""
 
-#: data_checks.py:48
+#: data_checks.py:45
 msgid "Ensure that there are no personal notes in cancelled lessons"
 msgstr ""
 
-#: data_checks.py:49
+#: data_checks.py:46
 msgid "The personal note is related to a cancelled lesson."
 msgstr ""
 
-#: data_checks.py:76
+#: data_checks.py:73
 msgid "Ensure that 'groups_of_person' is set for every personal note"
 msgstr ""
 
-#: data_checks.py:77
+#: data_checks.py:74
 msgid "The personal note has no group in 'groups_of_person'."
 msgstr ""
 
-#: data_checks.py:111
+#: data_checks.py:99
 msgid "Ensure that there are no filled out lesson documentations on holidays"
 msgstr ""
 
-#: data_checks.py:112
+#: data_checks.py:100
 msgid "The lesson documentation is on holidays."
 msgstr ""
 
-#: data_checks.py:147
+#: data_checks.py:133
 msgid "Ensure that there are no filled out personal notes on holidays"
 msgstr ""
 
-#: data_checks.py:148
+#: data_checks.py:134
 msgid "The personal note is on holidays."
 msgstr ""
 
-#: data_checks.py:176
+#: data_checks.py:162
 msgid "Ensure that there are no excused personal notes without an absence"
 msgstr ""
 
-#: data_checks.py:177
+#: data_checks.py:163
 msgid "The personal note is marked as excused, but not as absent."
 msgstr ""
 
-#: forms.py:36
+#: forms.py:41
 msgid "Homework for the next lesson"
 msgstr ""
 
-#: forms.py:61 forms.py:185 templates/alsijil/print/full_register.html:199
+#: forms.py:66 forms.py:190 forms.py:272
+#: templates/alsijil/print/full_register.html:199
 msgid "Group"
 msgstr "Grex"
 
-#: forms.py:64 templates/alsijil/print/full_register.html:170
+#: forms.py:69 templates/alsijil/print/full_register.html:170
 #: templates/alsijil/print/full_register.html:201
 msgid "Teacher"
 msgstr ""
 
-#: forms.py:79
+#: forms.py:84
 msgid "You can't select a group and a teacher both."
 msgstr ""
 
-#: forms.py:133 models.py:397
+#: forms.py:138 forms.py:274 models.py:397
 #: templates/alsijil/group_role/assigned_list.html:64
 msgid "Start date"
 msgstr ""
 
-#: forms.py:134 models.py:401
+#: forms.py:139 forms.py:275 models.py:401
 #: templates/alsijil/group_role/assigned_list.html:65
 msgid "End date"
 msgstr ""
 
-#: forms.py:135
+#: forms.py:140
 msgid "Start period"
 msgstr ""
 
-#: forms.py:136
+#: forms.py:141
 msgid "End period"
 msgstr ""
 
-#: forms.py:137 templates/alsijil/absences/register_confirm.html:52
+#: forms.py:142 templates/alsijil/absences/register_confirm.html:52
 #: templates/alsijil/class_register/lesson.html:261
-#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:235
 #: templates/alsijil/class_register/week_view.html:342
 #: templates/alsijil/print/full_register.html:75
 #: templates/alsijil/print/full_register.html:312
 msgid "Absent"
 msgstr ""
 
-#: forms.py:138 templates/alsijil/absences/register_confirm.html:56
+#: forms.py:143 templates/alsijil/absences/register_confirm.html:56
 #: templates/alsijil/class_register/lesson.html:263
-#: templates/alsijil/class_register/person.html:97
-#: templates/alsijil/class_register/person.html:226
+#: templates/alsijil/class_register/person.html:113
+#: templates/alsijil/class_register/person.html:243
 #: templates/alsijil/partials/mark_as_buttons.html:2
 #: templates/alsijil/partials/mark_as_buttons.html:3
 #: templates/alsijil/partials/persons_with_stats.html:74
@@ -126,25 +140,40 @@ msgstr ""
 msgid "Excused"
 msgstr ""
 
-#: forms.py:140 models.py:62 models.py:199
+#: forms.py:145 models.py:62 models.py:199
 #: templates/alsijil/class_register/lesson.html:264
 #: templates/alsijil/class_register/lesson.html:305
 msgid "Excuse type"
 msgstr ""
 
-#: forms.py:145 templates/alsijil/class_register/lesson.html:266
+#: forms.py:150 templates/alsijil/class_register/lesson.html:266
 #: templates/alsijil/class_register/lesson.html:326
 #: templates/alsijil/print/full_register.html:314
 msgid "Remarks"
 msgstr ""
 
-#: forms.py:195 templates/alsijil/absences/register.html:9
+#: forms.py:200 templates/alsijil/absences/register.html:9
 #: templates/alsijil/class_register/lesson.html:260
 #: templates/alsijil/group_role/assigned_list.html:63
 msgid "Person"
 msgstr "Persona"
 
-#: menus.py:6 preferences.py:8 templates/alsijil/print/full_register.html:16
+#: forms.py:270
+msgid "School term"
+msgstr ""
+
+#: forms.py:271
+msgid "Has lesson documentation"
+msgstr ""
+
+#: forms.py:273 templates/alsijil/class_register/week_view.html:106
+#: templates/alsijil/class_register/week_view.html:202
+#: templates/alsijil/print/full_register.html:169
+#: templates/alsijil/print/full_register.html:200
+msgid "Subject"
+msgstr ""
+
+#: menus.py:6 preferences.py:9 templates/alsijil/print/full_register.html:16
 msgid "Class register"
 msgstr ""
 
@@ -177,13 +206,18 @@ msgstr ""
 msgid "Assign group role"
 msgstr ""
 
-#: menus.py:82 models.py:63 templates/alsijil/excuse_type/list.html:8
+#: menus.py:82 templates/alsijil/class_register/all_objects.html:5
+#: templates/alsijil/class_register/all_objects.html:8
+msgid "All lessons"
+msgstr ""
+
+#: menus.py:93 models.py:63 templates/alsijil/excuse_type/list.html:8
 #: templates/alsijil/excuse_type/list.html:9
 #: templates/alsijil/partials/legend.html:26
 msgid "Excuse types"
 msgstr ""
 
-#: menus.py:93 models.py:204 models.py:361
+#: menus.py:104 models.py:204 models.py:361
 #: templates/alsijil/class_register/lesson.html:265
 #: templates/alsijil/extra_mark/list.html:8
 #: templates/alsijil/extra_mark/list.html:9
@@ -193,7 +227,7 @@ msgstr ""
 msgid "Extra marks"
 msgstr ""
 
-#: menus.py:104
+#: menus.py:115
 msgid "Manage group roles"
 msgstr ""
 
@@ -258,6 +292,7 @@ msgstr "Persona"
 
 #: models.py:239 templates/alsijil/class_register/lesson.html:114
 #: templates/alsijil/class_register/lesson.html:251
+#: templates/alsijil/class_register/person.html:31
 #: templates/alsijil/class_register/week_view.html:71
 #: templates/alsijil/class_register/week_view.html:317
 msgid "Personal notes"
@@ -292,7 +327,8 @@ msgstr "Grex"
 msgid "Lesson documentation"
 msgstr ""
 
-#: models.py:328 templates/alsijil/class_register/week_view.html:68
+#: models.py:328 templates/alsijil/class_register/person.html:27
+#: templates/alsijil/class_register/week_view.html:68
 msgid "Lesson documentations"
 msgstr ""
 
@@ -359,72 +395,84 @@ msgstr ""
 msgid "Can list all personal note filters"
 msgstr ""
 
-#: preferences.py:16
+#: preferences.py:17
 msgid "Block adding personal notes for cancelled lessons"
 msgstr ""
 
-#: preferences.py:24
+#: preferences.py:25
 msgid "Allow users to view their own personal notes"
 msgstr ""
 
-#: preferences.py:33
+#: preferences.py:34
 msgid "Allow primary group owners to register future absences for students in their groups"
 msgstr ""
 
 #: preferences.py:43
+msgid "Allow original teachers to edit their lessons although they are substituted"
+msgstr ""
+
+#: preferences.py:52
 msgid "Carry over data from first lesson period to the following lesson periods in lessons over multiple periods"
 msgstr ""
 
-#: preferences.py:46
+#: preferences.py:55
 msgid "This will carry over data only if the data in the following periods are empty."
 msgstr ""
 
-#: preferences.py:54
+#: preferences.py:63
 msgid "Carry over personal notes to all following lesson periods on the same day."
 msgstr ""
 
-#: preferences.py:63
+#: preferences.py:72
 msgid "Allow teachers to open lesson periods on the same day and not just at the beginning of the period"
 msgstr ""
 
-#: preferences.py:67
+#: preferences.py:76
 msgid "Lessons in the past are not affected by this setting, you can open them whenever you want."
 msgstr ""
 
-#: preferences.py:76
+#: preferences.py:85
 msgid "Allow teachers to add data for lessons in holidays"
 msgstr ""
 
-#: preferences.py:85
+#: preferences.py:94
 msgid "Allow group owners to assign group roles to the parents of the group's members"
 msgstr ""
 
-#: preferences.py:94
+#: preferences.py:103
 msgid "Show assigned group roles in week view"
 msgstr ""
 
-#: preferences.py:95
+#: preferences.py:104
 msgid "Only week view of groups"
 msgstr ""
 
-#: preferences.py:103
+#: preferences.py:112
 msgid "Show assigned group roles in lesson view"
 msgstr ""
 
-#: tables.py:17 tables.py:37 tables.py:62
+#: preferences.py:122
+msgid "Items per page in lessons table"
+msgstr ""
+
+#: preferences.py:126
+msgid "Each page must show at least one item."
+msgstr ""
+
+#: tables.py:19 tables.py:39 tables.py:64
 #: templates/alsijil/group_role/partials/assignment_options.html:13
 msgid "Edit"
 msgstr ""
 
-#: tables.py:23 tables.py:43 tables.py:68
-#: templates/alsijil/class_register/person.html:260
+#: tables.py:25 tables.py:45 tables.py:70
+#: templates/alsijil/class_register/person.html:277
 #: templates/alsijil/group_role/partials/assignment_options.html:29
 msgid "Delete"
 msgstr ""
 
 #: templates/alsijil/absences/register.html:5
 #: templates/alsijil/absences/register.html:6
-#: templates/alsijil/class_register/person.html:30
+#: templates/alsijil/class_register/person.html:46
 #: templates/alsijil/class_register/week_view.html:332
 #: templates/alsijil/partials/persons_with_stats.html:115
 msgid "Register absence"
@@ -539,13 +587,13 @@ msgid "%(period)s. period"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:56
-#: templates/alsijil/class_register/person.html:190
+#: templates/alsijil/class_register/person.html:207
 #: templates/alsijil/class_register/week_view.html:151
 #: templates/alsijil/class_register/week_view.html:214
 #: templates/alsijil/class_register/week_view.html:268
 #: templates/alsijil/partials/lesson_status_icon.html:16
 #: templates/alsijil/print/full_register.html:335
-#: templates/alsijil/print/full_register.html:415
+#: templates/alsijil/print/full_register.html:415 util/alsijil_helpers.py:316
 msgid "Event"
 msgstr ""
 
@@ -599,7 +647,7 @@ msgid "Late persons:"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:262
-#: templates/alsijil/class_register/person.html:109
+#: templates/alsijil/class_register/person.html:125
 #: templates/alsijil/partials/persons_with_stats.html:17
 #: templates/alsijil/partials/persons_with_stats.html:34
 #: templates/alsijil/partials/persons_with_stats.html:91
@@ -634,16 +682,16 @@ msgid ""
 "              "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:8
+#: templates/alsijil/class_register/person.html:5
 msgid "Class register: person"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:16
+#: templates/alsijil/class_register/person.html:13
 #: templates/alsijil/class_register/students_list.html:10
 msgid "Back"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:19
+#: templates/alsijil/class_register/person.html:16
 #, python-format
 msgid ""
 "\n"
@@ -651,36 +699,36 @@ msgid ""
 "  "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:36
+#: templates/alsijil/class_register/person.html:52
 #: templates/alsijil/partials/legend.html:14
 msgid "Unexcused absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:45
-#: templates/alsijil/class_register/person.html:64
-#: templates/alsijil/class_register/person.html:201
-#: templates/alsijil/class_register/person.html:248
+#: templates/alsijil/class_register/person.html:61
+#: templates/alsijil/class_register/person.html:80
+#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:265
 msgid "Mark as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:48
-#: templates/alsijil/class_register/person.html:67
-#: templates/alsijil/class_register/person.html:204
-#: templates/alsijil/class_register/person.html:210
-#: templates/alsijil/class_register/person.html:251
-#: templates/alsijil/class_register/person.html:257
+#: templates/alsijil/class_register/person.html:64
+#: templates/alsijil/class_register/person.html:83
+#: templates/alsijil/class_register/person.html:221
+#: templates/alsijil/class_register/person.html:227
+#: templates/alsijil/class_register/person.html:268
+#: templates/alsijil/class_register/person.html:274
 msgid "Delete note"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:77
+#: templates/alsijil/class_register/person.html:93
 msgid "There are no unexcused lessons."
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:82
+#: templates/alsijil/class_register/person.html:98
 msgid "Statistics on absences, tardiness and remarks"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:91
+#: templates/alsijil/class_register/person.html:107
 #: templates/alsijil/partials/legend.html:10
 #: templates/alsijil/partials/persons_with_stats.html:16
 #: templates/alsijil/partials/persons_with_stats.html:26
@@ -689,34 +737,36 @@ msgstr ""
 msgid "Absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:95
+#: templates/alsijil/class_register/person.html:111
 #: templates/alsijil/print/full_register.html:274
 msgid "thereof"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:105
+#: templates/alsijil/class_register/person.html:121
 #: templates/alsijil/partials/persons_with_stats.html:86
 #: templates/alsijil/print/full_register.html:81
 #: templates/alsijil/print/full_register.html:283
 msgid "Unexcused"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:126
+#: templates/alsijil/class_register/person.html:142
 #: templates/alsijil/print/full_register.html:304
 msgid "Relevant personal notes"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:142
+#: templates/alsijil/class_register/person.html:158
 #, python-format
-msgid "Week %(week)s"
+msgid ""
+"Week\n"
+"                        %(week)s"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:150
-#: templates/alsijil/class_register/person.html:168
+#: templates/alsijil/class_register/person.html:167
+#: templates/alsijil/class_register/person.html:185
 msgid "Mark all as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:233
+#: templates/alsijil/class_register/person.html:250
 #, python-format
 msgid "%(late)s' late"
 msgstr ""
@@ -742,13 +792,6 @@ msgstr ""
 msgid "Period"
 msgstr ""
 
-#: templates/alsijil/class_register/week_view.html:106
-#: templates/alsijil/class_register/week_view.html:202
-#: templates/alsijil/print/full_register.html:169
-#: templates/alsijil/print/full_register.html:200
-msgid "Subject"
-msgstr ""
-
 #: templates/alsijil/class_register/week_view.html:107
 #: templates/alsijil/class_register/week_view.html:231
 msgid "Teachers"
@@ -880,6 +923,10 @@ msgstr ""
 msgid "Stop"
 msgstr ""
 
+#: templates/alsijil/notifications/check.html:1
+msgid "Please check if the following class register entries are complete and correct:"
+msgstr ""
+
 #: templates/alsijil/partials/absences.html:6
 #: templates/alsijil/partials/persons_with_stats.html:27
 #: templates/alsijil/partials/persons_with_stats.html:44
@@ -937,6 +984,22 @@ msgstr ""
 msgid "e"
 msgstr ""
 
+#: templates/alsijil/partials/objects_table.html:4
+msgid "Lesson filter"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:9
+msgid "Update filters"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:22
+msgid "Lesson table"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:31
+msgid "Execute"
+msgstr ""
+
 #: templates/alsijil/partials/persons_with_stats.html:7
 msgid "No students available."
 msgstr ""
@@ -1114,94 +1177,94 @@ msgid "Yes"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:373
-msgid "Lesson documentation for week"
+msgid "Week"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:383
 msgid "Notes"
 msgstr ""
 
-#: views.py:96
+#: views.py:108
 msgid "You either selected an invalid lesson or there is currently no lesson in progress."
 msgstr ""
 
-#: views.py:129
+#: views.py:141
 msgid "You are not allowed to create a lesson documentation for a lesson in the future."
 msgstr ""
 
-#: views.py:211
+#: views.py:225
 msgid "The lesson documentation has been saved."
 msgstr ""
 
-#: views.py:245
+#: views.py:259
 msgid "The personal notes have been saved."
 msgstr ""
 
-#: views.py:766
+#: views.py:782
 msgid "The absences have been marked as excused."
 msgstr ""
 
-#: views.py:781
+#: views.py:797
 msgid "The absence has been marked as excused."
 msgstr ""
 
-#: views.py:958
+#: views.py:988
 msgid "The absence has been saved."
 msgstr ""
 
-#: views.py:979
+#: views.py:1009
 msgid "The personal note has been deleted."
 msgstr ""
 
-#: views.py:1001
+#: views.py:1031
 msgid "The extra mark has been created."
 msgstr ""
 
-#: views.py:1013
+#: views.py:1043
 msgid "The extra mark has been saved."
 msgstr ""
 
-#: views.py:1024
+#: views.py:1054
 msgid "The extra mark has been deleted."
 msgstr ""
 
-#: views.py:1045
+#: views.py:1075
 msgid "The excuse type has been created."
 msgstr ""
 
-#: views.py:1057
+#: views.py:1087
 msgid "The excuse type has been saved."
 msgstr ""
 
-#: views.py:1068
+#: views.py:1098
 msgid "The excuse type has been deleted."
 msgstr ""
 
-#: views.py:1089
+#: views.py:1119
 msgid "The group role has been created."
 msgstr ""
 
-#: views.py:1101
+#: views.py:1131
 msgid "The group role has been saved."
 msgstr ""
 
-#: views.py:1112
+#: views.py:1142
 msgid "The group role has been deleted."
 msgstr ""
 
-#: views.py:1145 views.py:1177
+#: views.py:1175 views.py:1207
 msgid "The group role has been assigned."
 msgstr ""
 
-#: views.py:1196
+#: views.py:1226
 msgid "The group role assignment has been saved."
 msgstr ""
 
-#: views.py:1217
+#: views.py:1247
 msgid "The group role assignment has been stopped."
 msgstr ""
 
-#: views.py:1230
+#: views.py:1260
 msgid "The group role assignment has been deleted."
 msgstr ""
 
diff --git a/aleksis/apps/alsijil/locale/nb_NO/LC_MESSAGES/django.po b/aleksis/apps/alsijil/locale/nb_NO/LC_MESSAGES/django.po
index 1d73f150d6c8255824d4236d25ea064757b0779d..b624779a115d105311b06ccfe867aefbc04faaee 100644
--- a/aleksis/apps/alsijil/locale/nb_NO/LC_MESSAGES/django.po
+++ b/aleksis/apps/alsijil/locale/nb_NO/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-24 12:02+0100\n"
+"POT-Creation-Date: 2021-03-18 14:33+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,106 +17,120 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: data_checks.py:15
+#: actions.py:30
+msgid "{} wants you to check some class register entries."
+msgstr ""
+
+#: actions.py:48
+#, python-brace-format
+msgid "We have successfully sent notifications to {count_teachers} persons for {count_items} lessons."
+msgstr ""
+
+#: actions.py:54
+msgid "Notify teacher to check data"
+msgstr ""
+
+#: data_checks.py:12
 msgid "Delete object"
 msgstr ""
 
-#: data_checks.py:25
+#: data_checks.py:22
 msgid "Set current groups"
 msgstr ""
 
-#: data_checks.py:36
+#: data_checks.py:33
 msgid "Reset personal note to defaults"
 msgstr ""
 
-#: data_checks.py:48
+#: data_checks.py:45
 msgid "Ensure that there are no personal notes in cancelled lessons"
 msgstr ""
 
-#: data_checks.py:49
+#: data_checks.py:46
 msgid "The personal note is related to a cancelled lesson."
 msgstr ""
 
-#: data_checks.py:76
+#: data_checks.py:73
 msgid "Ensure that 'groups_of_person' is set for every personal note"
 msgstr ""
 
-#: data_checks.py:77
+#: data_checks.py:74
 msgid "The personal note has no group in 'groups_of_person'."
 msgstr ""
 
-#: data_checks.py:111
+#: data_checks.py:99
 msgid "Ensure that there are no filled out lesson documentations on holidays"
 msgstr ""
 
-#: data_checks.py:112
+#: data_checks.py:100
 msgid "The lesson documentation is on holidays."
 msgstr ""
 
-#: data_checks.py:147
+#: data_checks.py:133
 msgid "Ensure that there are no filled out personal notes on holidays"
 msgstr ""
 
-#: data_checks.py:148
+#: data_checks.py:134
 msgid "The personal note is on holidays."
 msgstr ""
 
-#: data_checks.py:176
+#: data_checks.py:162
 msgid "Ensure that there are no excused personal notes without an absence"
 msgstr ""
 
-#: data_checks.py:177
+#: data_checks.py:163
 msgid "The personal note is marked as excused, but not as absent."
 msgstr ""
 
-#: forms.py:36
+#: forms.py:41
 msgid "Homework for the next lesson"
 msgstr ""
 
-#: forms.py:61 forms.py:185 templates/alsijil/print/full_register.html:199
+#: forms.py:66 forms.py:190 forms.py:272
+#: templates/alsijil/print/full_register.html:199
 msgid "Group"
 msgstr ""
 
-#: forms.py:64 templates/alsijil/print/full_register.html:170
+#: forms.py:69 templates/alsijil/print/full_register.html:170
 #: templates/alsijil/print/full_register.html:201
 msgid "Teacher"
 msgstr ""
 
-#: forms.py:79
+#: forms.py:84
 msgid "You can't select a group and a teacher both."
 msgstr ""
 
-#: forms.py:133 models.py:397
+#: forms.py:138 forms.py:274 models.py:397
 #: templates/alsijil/group_role/assigned_list.html:64
 msgid "Start date"
 msgstr ""
 
-#: forms.py:134 models.py:401
+#: forms.py:139 forms.py:275 models.py:401
 #: templates/alsijil/group_role/assigned_list.html:65
 msgid "End date"
 msgstr ""
 
-#: forms.py:135
+#: forms.py:140
 msgid "Start period"
 msgstr ""
 
-#: forms.py:136
+#: forms.py:141
 msgid "End period"
 msgstr ""
 
-#: forms.py:137 templates/alsijil/absences/register_confirm.html:52
+#: forms.py:142 templates/alsijil/absences/register_confirm.html:52
 #: templates/alsijil/class_register/lesson.html:261
-#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:235
 #: templates/alsijil/class_register/week_view.html:342
 #: templates/alsijil/print/full_register.html:75
 #: templates/alsijil/print/full_register.html:312
 msgid "Absent"
 msgstr ""
 
-#: forms.py:138 templates/alsijil/absences/register_confirm.html:56
+#: forms.py:143 templates/alsijil/absences/register_confirm.html:56
 #: templates/alsijil/class_register/lesson.html:263
-#: templates/alsijil/class_register/person.html:97
-#: templates/alsijil/class_register/person.html:226
+#: templates/alsijil/class_register/person.html:113
+#: templates/alsijil/class_register/person.html:243
 #: templates/alsijil/partials/mark_as_buttons.html:2
 #: templates/alsijil/partials/mark_as_buttons.html:3
 #: templates/alsijil/partials/persons_with_stats.html:74
@@ -125,25 +139,40 @@ msgstr ""
 msgid "Excused"
 msgstr ""
 
-#: forms.py:140 models.py:62 models.py:199
+#: forms.py:145 models.py:62 models.py:199
 #: templates/alsijil/class_register/lesson.html:264
 #: templates/alsijil/class_register/lesson.html:305
 msgid "Excuse type"
 msgstr ""
 
-#: forms.py:145 templates/alsijil/class_register/lesson.html:266
+#: forms.py:150 templates/alsijil/class_register/lesson.html:266
 #: templates/alsijil/class_register/lesson.html:326
 #: templates/alsijil/print/full_register.html:314
 msgid "Remarks"
 msgstr ""
 
-#: forms.py:195 templates/alsijil/absences/register.html:9
+#: forms.py:200 templates/alsijil/absences/register.html:9
 #: templates/alsijil/class_register/lesson.html:260
 #: templates/alsijil/group_role/assigned_list.html:63
 msgid "Person"
 msgstr ""
 
-#: menus.py:6 preferences.py:8 templates/alsijil/print/full_register.html:16
+#: forms.py:270
+msgid "School term"
+msgstr ""
+
+#: forms.py:271
+msgid "Has lesson documentation"
+msgstr ""
+
+#: forms.py:273 templates/alsijil/class_register/week_view.html:106
+#: templates/alsijil/class_register/week_view.html:202
+#: templates/alsijil/print/full_register.html:169
+#: templates/alsijil/print/full_register.html:200
+msgid "Subject"
+msgstr ""
+
+#: menus.py:6 preferences.py:9 templates/alsijil/print/full_register.html:16
 msgid "Class register"
 msgstr ""
 
@@ -174,13 +203,18 @@ msgstr ""
 msgid "Assign group role"
 msgstr ""
 
-#: menus.py:82 models.py:63 templates/alsijil/excuse_type/list.html:8
+#: menus.py:82 templates/alsijil/class_register/all_objects.html:5
+#: templates/alsijil/class_register/all_objects.html:8
+msgid "All lessons"
+msgstr ""
+
+#: menus.py:93 models.py:63 templates/alsijil/excuse_type/list.html:8
 #: templates/alsijil/excuse_type/list.html:9
 #: templates/alsijil/partials/legend.html:26
 msgid "Excuse types"
 msgstr ""
 
-#: menus.py:93 models.py:204 models.py:361
+#: menus.py:104 models.py:204 models.py:361
 #: templates/alsijil/class_register/lesson.html:265
 #: templates/alsijil/extra_mark/list.html:8
 #: templates/alsijil/extra_mark/list.html:9
@@ -190,7 +224,7 @@ msgstr ""
 msgid "Extra marks"
 msgstr ""
 
-#: menus.py:104
+#: menus.py:115
 msgid "Manage group roles"
 msgstr ""
 
@@ -251,6 +285,7 @@ msgstr ""
 
 #: models.py:239 templates/alsijil/class_register/lesson.html:114
 #: templates/alsijil/class_register/lesson.html:251
+#: templates/alsijil/class_register/person.html:31
 #: templates/alsijil/class_register/week_view.html:71
 #: templates/alsijil/class_register/week_view.html:317
 msgid "Personal notes"
@@ -283,7 +318,8 @@ msgstr ""
 msgid "Lesson documentation"
 msgstr ""
 
-#: models.py:328 templates/alsijil/class_register/week_view.html:68
+#: models.py:328 templates/alsijil/class_register/person.html:27
+#: templates/alsijil/class_register/week_view.html:68
 msgid "Lesson documentations"
 msgstr ""
 
@@ -344,72 +380,84 @@ msgstr ""
 msgid "Can list all personal note filters"
 msgstr ""
 
-#: preferences.py:16
+#: preferences.py:17
 msgid "Block adding personal notes for cancelled lessons"
 msgstr ""
 
-#: preferences.py:24
+#: preferences.py:25
 msgid "Allow users to view their own personal notes"
 msgstr ""
 
-#: preferences.py:33
+#: preferences.py:34
 msgid "Allow primary group owners to register future absences for students in their groups"
 msgstr ""
 
 #: preferences.py:43
+msgid "Allow original teachers to edit their lessons although they are substituted"
+msgstr ""
+
+#: preferences.py:52
 msgid "Carry over data from first lesson period to the following lesson periods in lessons over multiple periods"
 msgstr ""
 
-#: preferences.py:46
+#: preferences.py:55
 msgid "This will carry over data only if the data in the following periods are empty."
 msgstr ""
 
-#: preferences.py:54
+#: preferences.py:63
 msgid "Carry over personal notes to all following lesson periods on the same day."
 msgstr ""
 
-#: preferences.py:63
+#: preferences.py:72
 msgid "Allow teachers to open lesson periods on the same day and not just at the beginning of the period"
 msgstr ""
 
-#: preferences.py:67
+#: preferences.py:76
 msgid "Lessons in the past are not affected by this setting, you can open them whenever you want."
 msgstr ""
 
-#: preferences.py:76
+#: preferences.py:85
 msgid "Allow teachers to add data for lessons in holidays"
 msgstr ""
 
-#: preferences.py:85
+#: preferences.py:94
 msgid "Allow group owners to assign group roles to the parents of the group's members"
 msgstr ""
 
-#: preferences.py:94
+#: preferences.py:103
 msgid "Show assigned group roles in week view"
 msgstr ""
 
-#: preferences.py:95
+#: preferences.py:104
 msgid "Only week view of groups"
 msgstr ""
 
-#: preferences.py:103
+#: preferences.py:112
 msgid "Show assigned group roles in lesson view"
 msgstr ""
 
-#: tables.py:17 tables.py:37 tables.py:62
+#: preferences.py:122
+msgid "Items per page in lessons table"
+msgstr ""
+
+#: preferences.py:126
+msgid "Each page must show at least one item."
+msgstr ""
+
+#: tables.py:19 tables.py:39 tables.py:64
 #: templates/alsijil/group_role/partials/assignment_options.html:13
 msgid "Edit"
 msgstr ""
 
-#: tables.py:23 tables.py:43 tables.py:68
-#: templates/alsijil/class_register/person.html:260
+#: tables.py:25 tables.py:45 tables.py:70
+#: templates/alsijil/class_register/person.html:277
 #: templates/alsijil/group_role/partials/assignment_options.html:29
 msgid "Delete"
 msgstr ""
 
 #: templates/alsijil/absences/register.html:5
 #: templates/alsijil/absences/register.html:6
-#: templates/alsijil/class_register/person.html:30
+#: templates/alsijil/class_register/person.html:46
 #: templates/alsijil/class_register/week_view.html:332
 #: templates/alsijil/partials/persons_with_stats.html:115
 msgid "Register absence"
@@ -524,13 +572,13 @@ msgid "%(period)s. period"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:56
-#: templates/alsijil/class_register/person.html:190
+#: templates/alsijil/class_register/person.html:207
 #: templates/alsijil/class_register/week_view.html:151
 #: templates/alsijil/class_register/week_view.html:214
 #: templates/alsijil/class_register/week_view.html:268
 #: templates/alsijil/partials/lesson_status_icon.html:16
 #: templates/alsijil/print/full_register.html:335
-#: templates/alsijil/print/full_register.html:415
+#: templates/alsijil/print/full_register.html:415 util/alsijil_helpers.py:316
 msgid "Event"
 msgstr ""
 
@@ -584,7 +632,7 @@ msgid "Late persons:"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:262
-#: templates/alsijil/class_register/person.html:109
+#: templates/alsijil/class_register/person.html:125
 #: templates/alsijil/partials/persons_with_stats.html:17
 #: templates/alsijil/partials/persons_with_stats.html:34
 #: templates/alsijil/partials/persons_with_stats.html:91
@@ -619,16 +667,16 @@ msgid ""
 "              "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:8
+#: templates/alsijil/class_register/person.html:5
 msgid "Class register: person"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:16
+#: templates/alsijil/class_register/person.html:13
 #: templates/alsijil/class_register/students_list.html:10
 msgid "Back"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:19
+#: templates/alsijil/class_register/person.html:16
 #, python-format
 msgid ""
 "\n"
@@ -636,36 +684,36 @@ msgid ""
 "  "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:36
+#: templates/alsijil/class_register/person.html:52
 #: templates/alsijil/partials/legend.html:14
 msgid "Unexcused absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:45
-#: templates/alsijil/class_register/person.html:64
-#: templates/alsijil/class_register/person.html:201
-#: templates/alsijil/class_register/person.html:248
+#: templates/alsijil/class_register/person.html:61
+#: templates/alsijil/class_register/person.html:80
+#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:265
 msgid "Mark as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:48
-#: templates/alsijil/class_register/person.html:67
-#: templates/alsijil/class_register/person.html:204
-#: templates/alsijil/class_register/person.html:210
-#: templates/alsijil/class_register/person.html:251
-#: templates/alsijil/class_register/person.html:257
+#: templates/alsijil/class_register/person.html:64
+#: templates/alsijil/class_register/person.html:83
+#: templates/alsijil/class_register/person.html:221
+#: templates/alsijil/class_register/person.html:227
+#: templates/alsijil/class_register/person.html:268
+#: templates/alsijil/class_register/person.html:274
 msgid "Delete note"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:77
+#: templates/alsijil/class_register/person.html:93
 msgid "There are no unexcused lessons."
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:82
+#: templates/alsijil/class_register/person.html:98
 msgid "Statistics on absences, tardiness and remarks"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:91
+#: templates/alsijil/class_register/person.html:107
 #: templates/alsijil/partials/legend.html:10
 #: templates/alsijil/partials/persons_with_stats.html:16
 #: templates/alsijil/partials/persons_with_stats.html:26
@@ -674,34 +722,36 @@ msgstr ""
 msgid "Absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:95
+#: templates/alsijil/class_register/person.html:111
 #: templates/alsijil/print/full_register.html:274
 msgid "thereof"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:105
+#: templates/alsijil/class_register/person.html:121
 #: templates/alsijil/partials/persons_with_stats.html:86
 #: templates/alsijil/print/full_register.html:81
 #: templates/alsijil/print/full_register.html:283
 msgid "Unexcused"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:126
+#: templates/alsijil/class_register/person.html:142
 #: templates/alsijil/print/full_register.html:304
 msgid "Relevant personal notes"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:142
+#: templates/alsijil/class_register/person.html:158
 #, python-format
-msgid "Week %(week)s"
+msgid ""
+"Week\n"
+"                        %(week)s"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:150
-#: templates/alsijil/class_register/person.html:168
+#: templates/alsijil/class_register/person.html:167
+#: templates/alsijil/class_register/person.html:185
 msgid "Mark all as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:233
+#: templates/alsijil/class_register/person.html:250
 #, python-format
 msgid "%(late)s' late"
 msgstr ""
@@ -727,13 +777,6 @@ msgstr ""
 msgid "Period"
 msgstr ""
 
-#: templates/alsijil/class_register/week_view.html:106
-#: templates/alsijil/class_register/week_view.html:202
-#: templates/alsijil/print/full_register.html:169
-#: templates/alsijil/print/full_register.html:200
-msgid "Subject"
-msgstr ""
-
 #: templates/alsijil/class_register/week_view.html:107
 #: templates/alsijil/class_register/week_view.html:231
 msgid "Teachers"
@@ -863,6 +906,10 @@ msgstr ""
 msgid "Stop"
 msgstr ""
 
+#: templates/alsijil/notifications/check.html:1
+msgid "Please check if the following class register entries are complete and correct:"
+msgstr ""
+
 #: templates/alsijil/partials/absences.html:6
 #: templates/alsijil/partials/persons_with_stats.html:27
 #: templates/alsijil/partials/persons_with_stats.html:44
@@ -920,6 +967,22 @@ msgstr ""
 msgid "e"
 msgstr ""
 
+#: templates/alsijil/partials/objects_table.html:4
+msgid "Lesson filter"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:9
+msgid "Update filters"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:22
+msgid "Lesson table"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:31
+msgid "Execute"
+msgstr ""
+
 #: templates/alsijil/partials/persons_with_stats.html:7
 msgid "No students available."
 msgstr ""
@@ -1095,93 +1158,93 @@ msgid "Yes"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:373
-msgid "Lesson documentation for week"
+msgid "Week"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:383
 msgid "Notes"
 msgstr ""
 
-#: views.py:96
+#: views.py:108
 msgid "You either selected an invalid lesson or there is currently no lesson in progress."
 msgstr ""
 
-#: views.py:129
+#: views.py:141
 msgid "You are not allowed to create a lesson documentation for a lesson in the future."
 msgstr ""
 
-#: views.py:211
+#: views.py:225
 msgid "The lesson documentation has been saved."
 msgstr ""
 
-#: views.py:245
+#: views.py:259
 msgid "The personal notes have been saved."
 msgstr ""
 
-#: views.py:766
+#: views.py:782
 msgid "The absences have been marked as excused."
 msgstr ""
 
-#: views.py:781
+#: views.py:797
 msgid "The absence has been marked as excused."
 msgstr ""
 
-#: views.py:958
+#: views.py:988
 msgid "The absence has been saved."
 msgstr ""
 
-#: views.py:979
+#: views.py:1009
 msgid "The personal note has been deleted."
 msgstr ""
 
-#: views.py:1001
+#: views.py:1031
 msgid "The extra mark has been created."
 msgstr ""
 
-#: views.py:1013
+#: views.py:1043
 msgid "The extra mark has been saved."
 msgstr ""
 
-#: views.py:1024
+#: views.py:1054
 msgid "The extra mark has been deleted."
 msgstr ""
 
-#: views.py:1045
+#: views.py:1075
 msgid "The excuse type has been created."
 msgstr ""
 
-#: views.py:1057
+#: views.py:1087
 msgid "The excuse type has been saved."
 msgstr ""
 
-#: views.py:1068
+#: views.py:1098
 msgid "The excuse type has been deleted."
 msgstr ""
 
-#: views.py:1089
+#: views.py:1119
 msgid "The group role has been created."
 msgstr ""
 
-#: views.py:1101
+#: views.py:1131
 msgid "The group role has been saved."
 msgstr ""
 
-#: views.py:1112
+#: views.py:1142
 msgid "The group role has been deleted."
 msgstr ""
 
-#: views.py:1145 views.py:1177
+#: views.py:1175 views.py:1207
 msgid "The group role has been assigned."
 msgstr ""
 
-#: views.py:1196
+#: views.py:1226
 msgid "The group role assignment has been saved."
 msgstr ""
 
-#: views.py:1217
+#: views.py:1247
 msgid "The group role assignment has been stopped."
 msgstr ""
 
-#: views.py:1230
+#: views.py:1260
 msgid "The group role assignment has been deleted."
 msgstr ""
diff --git a/aleksis/apps/alsijil/locale/tr_TR/LC_MESSAGES/django.po b/aleksis/apps/alsijil/locale/tr_TR/LC_MESSAGES/django.po
index 1d73f150d6c8255824d4236d25ea064757b0779d..b624779a115d105311b06ccfe867aefbc04faaee 100644
--- a/aleksis/apps/alsijil/locale/tr_TR/LC_MESSAGES/django.po
+++ b/aleksis/apps/alsijil/locale/tr_TR/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-24 12:02+0100\n"
+"POT-Creation-Date: 2021-03-18 14:33+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,106 +17,120 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: data_checks.py:15
+#: actions.py:30
+msgid "{} wants you to check some class register entries."
+msgstr ""
+
+#: actions.py:48
+#, python-brace-format
+msgid "We have successfully sent notifications to {count_teachers} persons for {count_items} lessons."
+msgstr ""
+
+#: actions.py:54
+msgid "Notify teacher to check data"
+msgstr ""
+
+#: data_checks.py:12
 msgid "Delete object"
 msgstr ""
 
-#: data_checks.py:25
+#: data_checks.py:22
 msgid "Set current groups"
 msgstr ""
 
-#: data_checks.py:36
+#: data_checks.py:33
 msgid "Reset personal note to defaults"
 msgstr ""
 
-#: data_checks.py:48
+#: data_checks.py:45
 msgid "Ensure that there are no personal notes in cancelled lessons"
 msgstr ""
 
-#: data_checks.py:49
+#: data_checks.py:46
 msgid "The personal note is related to a cancelled lesson."
 msgstr ""
 
-#: data_checks.py:76
+#: data_checks.py:73
 msgid "Ensure that 'groups_of_person' is set for every personal note"
 msgstr ""
 
-#: data_checks.py:77
+#: data_checks.py:74
 msgid "The personal note has no group in 'groups_of_person'."
 msgstr ""
 
-#: data_checks.py:111
+#: data_checks.py:99
 msgid "Ensure that there are no filled out lesson documentations on holidays"
 msgstr ""
 
-#: data_checks.py:112
+#: data_checks.py:100
 msgid "The lesson documentation is on holidays."
 msgstr ""
 
-#: data_checks.py:147
+#: data_checks.py:133
 msgid "Ensure that there are no filled out personal notes on holidays"
 msgstr ""
 
-#: data_checks.py:148
+#: data_checks.py:134
 msgid "The personal note is on holidays."
 msgstr ""
 
-#: data_checks.py:176
+#: data_checks.py:162
 msgid "Ensure that there are no excused personal notes without an absence"
 msgstr ""
 
-#: data_checks.py:177
+#: data_checks.py:163
 msgid "The personal note is marked as excused, but not as absent."
 msgstr ""
 
-#: forms.py:36
+#: forms.py:41
 msgid "Homework for the next lesson"
 msgstr ""
 
-#: forms.py:61 forms.py:185 templates/alsijil/print/full_register.html:199
+#: forms.py:66 forms.py:190 forms.py:272
+#: templates/alsijil/print/full_register.html:199
 msgid "Group"
 msgstr ""
 
-#: forms.py:64 templates/alsijil/print/full_register.html:170
+#: forms.py:69 templates/alsijil/print/full_register.html:170
 #: templates/alsijil/print/full_register.html:201
 msgid "Teacher"
 msgstr ""
 
-#: forms.py:79
+#: forms.py:84
 msgid "You can't select a group and a teacher both."
 msgstr ""
 
-#: forms.py:133 models.py:397
+#: forms.py:138 forms.py:274 models.py:397
 #: templates/alsijil/group_role/assigned_list.html:64
 msgid "Start date"
 msgstr ""
 
-#: forms.py:134 models.py:401
+#: forms.py:139 forms.py:275 models.py:401
 #: templates/alsijil/group_role/assigned_list.html:65
 msgid "End date"
 msgstr ""
 
-#: forms.py:135
+#: forms.py:140
 msgid "Start period"
 msgstr ""
 
-#: forms.py:136
+#: forms.py:141
 msgid "End period"
 msgstr ""
 
-#: forms.py:137 templates/alsijil/absences/register_confirm.html:52
+#: forms.py:142 templates/alsijil/absences/register_confirm.html:52
 #: templates/alsijil/class_register/lesson.html:261
-#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:235
 #: templates/alsijil/class_register/week_view.html:342
 #: templates/alsijil/print/full_register.html:75
 #: templates/alsijil/print/full_register.html:312
 msgid "Absent"
 msgstr ""
 
-#: forms.py:138 templates/alsijil/absences/register_confirm.html:56
+#: forms.py:143 templates/alsijil/absences/register_confirm.html:56
 #: templates/alsijil/class_register/lesson.html:263
-#: templates/alsijil/class_register/person.html:97
-#: templates/alsijil/class_register/person.html:226
+#: templates/alsijil/class_register/person.html:113
+#: templates/alsijil/class_register/person.html:243
 #: templates/alsijil/partials/mark_as_buttons.html:2
 #: templates/alsijil/partials/mark_as_buttons.html:3
 #: templates/alsijil/partials/persons_with_stats.html:74
@@ -125,25 +139,40 @@ msgstr ""
 msgid "Excused"
 msgstr ""
 
-#: forms.py:140 models.py:62 models.py:199
+#: forms.py:145 models.py:62 models.py:199
 #: templates/alsijil/class_register/lesson.html:264
 #: templates/alsijil/class_register/lesson.html:305
 msgid "Excuse type"
 msgstr ""
 
-#: forms.py:145 templates/alsijil/class_register/lesson.html:266
+#: forms.py:150 templates/alsijil/class_register/lesson.html:266
 #: templates/alsijil/class_register/lesson.html:326
 #: templates/alsijil/print/full_register.html:314
 msgid "Remarks"
 msgstr ""
 
-#: forms.py:195 templates/alsijil/absences/register.html:9
+#: forms.py:200 templates/alsijil/absences/register.html:9
 #: templates/alsijil/class_register/lesson.html:260
 #: templates/alsijil/group_role/assigned_list.html:63
 msgid "Person"
 msgstr ""
 
-#: menus.py:6 preferences.py:8 templates/alsijil/print/full_register.html:16
+#: forms.py:270
+msgid "School term"
+msgstr ""
+
+#: forms.py:271
+msgid "Has lesson documentation"
+msgstr ""
+
+#: forms.py:273 templates/alsijil/class_register/week_view.html:106
+#: templates/alsijil/class_register/week_view.html:202
+#: templates/alsijil/print/full_register.html:169
+#: templates/alsijil/print/full_register.html:200
+msgid "Subject"
+msgstr ""
+
+#: menus.py:6 preferences.py:9 templates/alsijil/print/full_register.html:16
 msgid "Class register"
 msgstr ""
 
@@ -174,13 +203,18 @@ msgstr ""
 msgid "Assign group role"
 msgstr ""
 
-#: menus.py:82 models.py:63 templates/alsijil/excuse_type/list.html:8
+#: menus.py:82 templates/alsijil/class_register/all_objects.html:5
+#: templates/alsijil/class_register/all_objects.html:8
+msgid "All lessons"
+msgstr ""
+
+#: menus.py:93 models.py:63 templates/alsijil/excuse_type/list.html:8
 #: templates/alsijil/excuse_type/list.html:9
 #: templates/alsijil/partials/legend.html:26
 msgid "Excuse types"
 msgstr ""
 
-#: menus.py:93 models.py:204 models.py:361
+#: menus.py:104 models.py:204 models.py:361
 #: templates/alsijil/class_register/lesson.html:265
 #: templates/alsijil/extra_mark/list.html:8
 #: templates/alsijil/extra_mark/list.html:9
@@ -190,7 +224,7 @@ msgstr ""
 msgid "Extra marks"
 msgstr ""
 
-#: menus.py:104
+#: menus.py:115
 msgid "Manage group roles"
 msgstr ""
 
@@ -251,6 +285,7 @@ msgstr ""
 
 #: models.py:239 templates/alsijil/class_register/lesson.html:114
 #: templates/alsijil/class_register/lesson.html:251
+#: templates/alsijil/class_register/person.html:31
 #: templates/alsijil/class_register/week_view.html:71
 #: templates/alsijil/class_register/week_view.html:317
 msgid "Personal notes"
@@ -283,7 +318,8 @@ msgstr ""
 msgid "Lesson documentation"
 msgstr ""
 
-#: models.py:328 templates/alsijil/class_register/week_view.html:68
+#: models.py:328 templates/alsijil/class_register/person.html:27
+#: templates/alsijil/class_register/week_view.html:68
 msgid "Lesson documentations"
 msgstr ""
 
@@ -344,72 +380,84 @@ msgstr ""
 msgid "Can list all personal note filters"
 msgstr ""
 
-#: preferences.py:16
+#: preferences.py:17
 msgid "Block adding personal notes for cancelled lessons"
 msgstr ""
 
-#: preferences.py:24
+#: preferences.py:25
 msgid "Allow users to view their own personal notes"
 msgstr ""
 
-#: preferences.py:33
+#: preferences.py:34
 msgid "Allow primary group owners to register future absences for students in their groups"
 msgstr ""
 
 #: preferences.py:43
+msgid "Allow original teachers to edit their lessons although they are substituted"
+msgstr ""
+
+#: preferences.py:52
 msgid "Carry over data from first lesson period to the following lesson periods in lessons over multiple periods"
 msgstr ""
 
-#: preferences.py:46
+#: preferences.py:55
 msgid "This will carry over data only if the data in the following periods are empty."
 msgstr ""
 
-#: preferences.py:54
+#: preferences.py:63
 msgid "Carry over personal notes to all following lesson periods on the same day."
 msgstr ""
 
-#: preferences.py:63
+#: preferences.py:72
 msgid "Allow teachers to open lesson periods on the same day and not just at the beginning of the period"
 msgstr ""
 
-#: preferences.py:67
+#: preferences.py:76
 msgid "Lessons in the past are not affected by this setting, you can open them whenever you want."
 msgstr ""
 
-#: preferences.py:76
+#: preferences.py:85
 msgid "Allow teachers to add data for lessons in holidays"
 msgstr ""
 
-#: preferences.py:85
+#: preferences.py:94
 msgid "Allow group owners to assign group roles to the parents of the group's members"
 msgstr ""
 
-#: preferences.py:94
+#: preferences.py:103
 msgid "Show assigned group roles in week view"
 msgstr ""
 
-#: preferences.py:95
+#: preferences.py:104
 msgid "Only week view of groups"
 msgstr ""
 
-#: preferences.py:103
+#: preferences.py:112
 msgid "Show assigned group roles in lesson view"
 msgstr ""
 
-#: tables.py:17 tables.py:37 tables.py:62
+#: preferences.py:122
+msgid "Items per page in lessons table"
+msgstr ""
+
+#: preferences.py:126
+msgid "Each page must show at least one item."
+msgstr ""
+
+#: tables.py:19 tables.py:39 tables.py:64
 #: templates/alsijil/group_role/partials/assignment_options.html:13
 msgid "Edit"
 msgstr ""
 
-#: tables.py:23 tables.py:43 tables.py:68
-#: templates/alsijil/class_register/person.html:260
+#: tables.py:25 tables.py:45 tables.py:70
+#: templates/alsijil/class_register/person.html:277
 #: templates/alsijil/group_role/partials/assignment_options.html:29
 msgid "Delete"
 msgstr ""
 
 #: templates/alsijil/absences/register.html:5
 #: templates/alsijil/absences/register.html:6
-#: templates/alsijil/class_register/person.html:30
+#: templates/alsijil/class_register/person.html:46
 #: templates/alsijil/class_register/week_view.html:332
 #: templates/alsijil/partials/persons_with_stats.html:115
 msgid "Register absence"
@@ -524,13 +572,13 @@ msgid "%(period)s. period"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:56
-#: templates/alsijil/class_register/person.html:190
+#: templates/alsijil/class_register/person.html:207
 #: templates/alsijil/class_register/week_view.html:151
 #: templates/alsijil/class_register/week_view.html:214
 #: templates/alsijil/class_register/week_view.html:268
 #: templates/alsijil/partials/lesson_status_icon.html:16
 #: templates/alsijil/print/full_register.html:335
-#: templates/alsijil/print/full_register.html:415
+#: templates/alsijil/print/full_register.html:415 util/alsijil_helpers.py:316
 msgid "Event"
 msgstr ""
 
@@ -584,7 +632,7 @@ msgid "Late persons:"
 msgstr ""
 
 #: templates/alsijil/class_register/lesson.html:262
-#: templates/alsijil/class_register/person.html:109
+#: templates/alsijil/class_register/person.html:125
 #: templates/alsijil/partials/persons_with_stats.html:17
 #: templates/alsijil/partials/persons_with_stats.html:34
 #: templates/alsijil/partials/persons_with_stats.html:91
@@ -619,16 +667,16 @@ msgid ""
 "              "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:8
+#: templates/alsijil/class_register/person.html:5
 msgid "Class register: person"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:16
+#: templates/alsijil/class_register/person.html:13
 #: templates/alsijil/class_register/students_list.html:10
 msgid "Back"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:19
+#: templates/alsijil/class_register/person.html:16
 #, python-format
 msgid ""
 "\n"
@@ -636,36 +684,36 @@ msgid ""
 "  "
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:36
+#: templates/alsijil/class_register/person.html:52
 #: templates/alsijil/partials/legend.html:14
 msgid "Unexcused absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:45
-#: templates/alsijil/class_register/person.html:64
-#: templates/alsijil/class_register/person.html:201
-#: templates/alsijil/class_register/person.html:248
+#: templates/alsijil/class_register/person.html:61
+#: templates/alsijil/class_register/person.html:80
+#: templates/alsijil/class_register/person.html:218
+#: templates/alsijil/class_register/person.html:265
 msgid "Mark as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:48
-#: templates/alsijil/class_register/person.html:67
-#: templates/alsijil/class_register/person.html:204
-#: templates/alsijil/class_register/person.html:210
-#: templates/alsijil/class_register/person.html:251
-#: templates/alsijil/class_register/person.html:257
+#: templates/alsijil/class_register/person.html:64
+#: templates/alsijil/class_register/person.html:83
+#: templates/alsijil/class_register/person.html:221
+#: templates/alsijil/class_register/person.html:227
+#: templates/alsijil/class_register/person.html:268
+#: templates/alsijil/class_register/person.html:274
 msgid "Delete note"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:77
+#: templates/alsijil/class_register/person.html:93
 msgid "There are no unexcused lessons."
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:82
+#: templates/alsijil/class_register/person.html:98
 msgid "Statistics on absences, tardiness and remarks"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:91
+#: templates/alsijil/class_register/person.html:107
 #: templates/alsijil/partials/legend.html:10
 #: templates/alsijil/partials/persons_with_stats.html:16
 #: templates/alsijil/partials/persons_with_stats.html:26
@@ -674,34 +722,36 @@ msgstr ""
 msgid "Absences"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:95
+#: templates/alsijil/class_register/person.html:111
 #: templates/alsijil/print/full_register.html:274
 msgid "thereof"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:105
+#: templates/alsijil/class_register/person.html:121
 #: templates/alsijil/partials/persons_with_stats.html:86
 #: templates/alsijil/print/full_register.html:81
 #: templates/alsijil/print/full_register.html:283
 msgid "Unexcused"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:126
+#: templates/alsijil/class_register/person.html:142
 #: templates/alsijil/print/full_register.html:304
 msgid "Relevant personal notes"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:142
+#: templates/alsijil/class_register/person.html:158
 #, python-format
-msgid "Week %(week)s"
+msgid ""
+"Week\n"
+"                        %(week)s"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:150
-#: templates/alsijil/class_register/person.html:168
+#: templates/alsijil/class_register/person.html:167
+#: templates/alsijil/class_register/person.html:185
 msgid "Mark all as"
 msgstr ""
 
-#: templates/alsijil/class_register/person.html:233
+#: templates/alsijil/class_register/person.html:250
 #, python-format
 msgid "%(late)s' late"
 msgstr ""
@@ -727,13 +777,6 @@ msgstr ""
 msgid "Period"
 msgstr ""
 
-#: templates/alsijil/class_register/week_view.html:106
-#: templates/alsijil/class_register/week_view.html:202
-#: templates/alsijil/print/full_register.html:169
-#: templates/alsijil/print/full_register.html:200
-msgid "Subject"
-msgstr ""
-
 #: templates/alsijil/class_register/week_view.html:107
 #: templates/alsijil/class_register/week_view.html:231
 msgid "Teachers"
@@ -863,6 +906,10 @@ msgstr ""
 msgid "Stop"
 msgstr ""
 
+#: templates/alsijil/notifications/check.html:1
+msgid "Please check if the following class register entries are complete and correct:"
+msgstr ""
+
 #: templates/alsijil/partials/absences.html:6
 #: templates/alsijil/partials/persons_with_stats.html:27
 #: templates/alsijil/partials/persons_with_stats.html:44
@@ -920,6 +967,22 @@ msgstr ""
 msgid "e"
 msgstr ""
 
+#: templates/alsijil/partials/objects_table.html:4
+msgid "Lesson filter"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:9
+msgid "Update filters"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:22
+msgid "Lesson table"
+msgstr ""
+
+#: templates/alsijil/partials/objects_table.html:31
+msgid "Execute"
+msgstr ""
+
 #: templates/alsijil/partials/persons_with_stats.html:7
 msgid "No students available."
 msgstr ""
@@ -1095,93 +1158,93 @@ msgid "Yes"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:373
-msgid "Lesson documentation for week"
+msgid "Week"
 msgstr ""
 
 #: templates/alsijil/print/full_register.html:383
 msgid "Notes"
 msgstr ""
 
-#: views.py:96
+#: views.py:108
 msgid "You either selected an invalid lesson or there is currently no lesson in progress."
 msgstr ""
 
-#: views.py:129
+#: views.py:141
 msgid "You are not allowed to create a lesson documentation for a lesson in the future."
 msgstr ""
 
-#: views.py:211
+#: views.py:225
 msgid "The lesson documentation has been saved."
 msgstr ""
 
-#: views.py:245
+#: views.py:259
 msgid "The personal notes have been saved."
 msgstr ""
 
-#: views.py:766
+#: views.py:782
 msgid "The absences have been marked as excused."
 msgstr ""
 
-#: views.py:781
+#: views.py:797
 msgid "The absence has been marked as excused."
 msgstr ""
 
-#: views.py:958
+#: views.py:988
 msgid "The absence has been saved."
 msgstr ""
 
-#: views.py:979
+#: views.py:1009
 msgid "The personal note has been deleted."
 msgstr ""
 
-#: views.py:1001
+#: views.py:1031
 msgid "The extra mark has been created."
 msgstr ""
 
-#: views.py:1013
+#: views.py:1043
 msgid "The extra mark has been saved."
 msgstr ""
 
-#: views.py:1024
+#: views.py:1054
 msgid "The extra mark has been deleted."
 msgstr ""
 
-#: views.py:1045
+#: views.py:1075
 msgid "The excuse type has been created."
 msgstr ""
 
-#: views.py:1057
+#: views.py:1087
 msgid "The excuse type has been saved."
 msgstr ""
 
-#: views.py:1068
+#: views.py:1098
 msgid "The excuse type has been deleted."
 msgstr ""
 
-#: views.py:1089
+#: views.py:1119
 msgid "The group role has been created."
 msgstr ""
 
-#: views.py:1101
+#: views.py:1131
 msgid "The group role has been saved."
 msgstr ""
 
-#: views.py:1112
+#: views.py:1142
 msgid "The group role has been deleted."
 msgstr ""
 
-#: views.py:1145 views.py:1177
+#: views.py:1175 views.py:1207
 msgid "The group role has been assigned."
 msgstr ""
 
-#: views.py:1196
+#: views.py:1226
 msgid "The group role assignment has been saved."
 msgstr ""
 
-#: views.py:1217
+#: views.py:1247
 msgid "The group role assignment has been stopped."
 msgstr ""
 
-#: views.py:1230
+#: views.py:1260
 msgid "The group role assignment has been deleted."
 msgstr ""