Close #12 and #17

- Added Help-Texts (Mouse-Over-Questionmarks) to the
  Event-Registraions-View.
- Answered registrations will be shown but muted.

dav_events/views/events.py

@@ -230,9 +230,11 @@ class EventRegistrationsView(EventPermissionMixin, generic.DetailView):
         registrations_support = hasattr(event, 'registrations')
         context['registrations_support'] = registrations_support
         if registrations_support:
-            registrations = event.registrations.filter(answered=False)
-            # registrations = event.registrations.all()
-            context['registrations'] = registrations
+            registrations_unanswered = event.registrations.filter(answered=False)
+            registrations_all = event.registrations.all()
+            context['registrations_unanswered'] = registrations_unanswered
+            context['registrations_all'] = registrations_all
+            context['registrations'] = registrations_all
 
         return context