Merged migrations and minor improvements

dav_events/models/event.py

@@ -505,6 +505,7 @@ class Event(models.Model):
             'course_goal_6': self.course_goal_6,
             'planned_publication_date': self.planned_publication_date,
             'internal_note': self.internal_note,
+            'registration_closed': self.registration_closed,
         }
         if context is not None:
             r.update(context)