Resolve "Add export functionality to course book"

Closes #258 (closed)

aleksis/apps/alsijil/templates/alsijil/partials/person_overview.html

@@ -98,9 +98,7 @@
       <td>
         {{ participation.documentation.subject.short_name }}
       </td>
-      <!-- TODO: Should probably use short_names -->
-      <!--       or just short_name of first (like in coursebook) -->
-      <td>{{ participation.note.documentation.teachers.all|join:', ' }}</td>
+      <td>{{ participation.note.documentation.get_teachers_short_names|join:', ' }}</td>
       <td>{{ participation.absence_reason.short_name }}</td>
       <td>{{ participation.tardiness }}</td>
     </tr>
@@ -126,9 +124,7 @@
       <td>
         {{ note.documentation.subject.short_name }}
       </td>
-      <!-- TODO: Should probably use short_names -->
-      <!--       or just short_name of first (like in coursebook) -->
-      <td>{{ note.documentation.teachers.all|join:', ' }}</td>
+      <td>{{ note.documentation.teachers.get_teachers_short_names|join:', ' }}</td>
       <td>{{ note.extra_mark.short_name }}</td>
       <td>{{ note.note }}</td>
     </tr>