Resolve "Add rules and permissions"

Closes #73 (closed)

Closes #79 (closed)

aleksis/apps/alsijil/templates/alsijil/class_register/week_view.html

 {# -*- engine:django -*- #}
 
 {% extends "core/base.html" %}
-{% load material_form i18n week_helpers static data_helpers %}
+{% load material_form i18n week_helpers static data_helpers rules %}
 
 {% block browser_title %}{% blocktrans %}Week view{% endblocktrans %}{% endblock %}
 
@@ -35,7 +35,8 @@
 
 
   <div class="row">
-    <h4 class="col s12 m6">{% blocktrans with el=el week=week.week %}CW {{ week }}: {{ instance }}{% endblocktrans %} </h4>
+    <h4 class="col s12 m6">{% blocktrans with el=el week=week.week %}CW {{ week }}:
+      {{ instance }}{% endblocktrans %} </h4>
     {% include "chronos/partials/week_select.html" with wanted_week=week %}
   </div>
 
@@ -65,38 +66,41 @@
                 </thead>
                 <tbody>
                 {% for period in periods %}
-                  <tr>
-                    <td class="center-align">
-                      {% include "alsijil/partials/lesson_status_icon.html" with period=period %}
-                    </td>
-                    <td class="tr-link">
-                      <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
-                        {{ period.period.period }}.
-                      </a>
-                    </td>
-                    {% if not group %}
+                  {% has_perm "alsijil.view_lessondocumentation" user period as can_view_lesson_documentation %}
+                  {% if can_view_lesson_documentation %}
+                    <tr>
+                      <td class="center-align">
+                        {% include "alsijil/partials/lesson_status_icon.html" with period=period %}
+                      </td>
+                      <td class="tr-link">
+                        <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
+                          {{ period.period.period }}.
+                        </a>
+                      </td>
+                      {% if not group %}
+                        <td>
+                          <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
+                            {{ period.lesson.group_names }}
+                          </a>
+                        </td>
+                      {% endif %}
                       <td>
                         <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
-                          {{ period.lesson.group_names }}
+                          {{ period.get_subject.name }}
                         </a>
                       </td>
-                    {% endif %}
-                    <td>
-                      <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
-                        {{ period.get_subject.name }}
-                      </a>
-                    </td>
-                    <td>
-                      <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
-                        {{ period.get_teacher_names }}
-                      </a>
-                    </td>
-                    <td>
-                      <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
-                        {{ period.get_lesson_documentation.topic }}
-                      </a>
-                    </td>
-                  </tr>
+                      <td>
+                        <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
+                          {{ period.get_teacher_names }}
+                        </a>
+                      </td>
+                      <td>
+                        <a class="tr-link" href="{% url 'lesson_by_week_and_period' week.year week.week period.id %}">
+                          {{ period.get_lesson_documentation.topic }}
+                        </a>
+                      </td>
+                    </tr>
+                  {% endif %}
                 {% endfor %}
                 </tbody>
               </table>