- Drop selected_event_schedule function
- Rename scheduled_room and scheduled_start_time to room and time as if there is no selected_schedule, the event is not scheduled.
- Only use JS for the drag&drop functionality and to the set/alter the time and rooms of the EventSchedule object.
- Introduce has_many :events, through: :event_schedules association to get unscheduled event easily
For the schedule versioning in the admin interface (having multiple possible shcedules) we need to change some models and associations. It has also been create a rake:move_events_attributes task to migrate the data.
User Interface addapted to make use of the introduced associations and models
The controllers are not using the serializers, because of a bug in active_model_serializer.
Hence the update.API tests are fixed to work with the new API response structure.
Fixes bugs in conference serializer.
