- Put admin views in a separate file
- Move creation/updating/cancelling of registrations to services.py
- Create classes for all frontend views so that these are class-based
- Make small changes to registration behaviour and urls (update form now loads using get)
- Make small changes to model methods: change some into properties or remove them in total and add new ones for better global usage
- Add API for registrations

Use event instead of event pk for

Add is_registration_allowed

Do not use status for is_registration_allowed

Rename is_registration_allowed, add cancellation_allowed and tests

Completely remove event 'status'

Catch DoesNotExist exceptions

Fix tests and PEP8

Rename is_registration_allowed to _is_registration_allowed

Move event attendance check to member model

Remove status property from events

Fix API fields

Add deprecated status field to events serializer

Fix event_id to pk

Fix serializers and viewsets

Change errors of update_registration

Make  a default empty hidden field

Fix fields in admin

Return latest data after update

Add tests for API

Fix all_present

Fix services create registration return

Joost Rijneveld authored Sep 14, 2017 and Sébastiaan Versteeg committed Sep 14, 2017

Previously the output of this function was a mixed list of strings
and VerbatimAddress objects. It worked because those had a __str__,
but in the new API they must be literal strings.

Move notification email of vacancies to a management command instead of using a non-secured HTTP endpoint

Previously `Member`s with multiple `Membership`s were listed

It might be the case that members with multiple `Membership` objects are sent
duplicate emails about their expiring memberships.

Members with multiple `Membership` objects were counted twice in the statistics.
If a Member has multiple `Membership` objects and a queryset filters on
`user__membership` the Member will appear multiple times in the result, by doing
a `.distinct()` these duplicates are removed.

Make sure the mentor mailinglist uses the next lecture year from January till September, otherwise the recipients are those of the intro of last year

Allows to embed youtube videos in various places, including partner
pages.

Fixes #468