Resolve "Add export functionality to course book"

Closes #258 (closed)

aleksis/apps/alsijil/templates/alsijil/print/register_for_group.html

@@ -37,7 +37,7 @@
     {% endif %}
     {% if group.child_groups %}
       <h4>{% trans 'Teachers and lessons in child groups' %}</h4>
-      {% include "alsijil/partials/register_teachers_and_subjects_table.html" with groups=group.child_groups only}
+      {% include "alsijil/partials/register_teachers_and_subjects_table.html" with groups=group.child_groups only %}
       <div class="page-break">&nbsp;</div>
     {% endif %}
   {% endif %}