It is not given, that null values are sorted last in the `order_by("-end_time")`
statement. This did not happens in the tests, but in a productive environment.
See https://docs.djangoproject.com/en/2.2/ref/models/querysets/#order-by for a
`.asc()`/`.desc()` option `nulls_last`. I choose another approach to just
exclude these values.
- Added settings.py docs
- Fixed left-overs from #4920
- Reworked all server messages to a new argument formet, so that the
client can translate server messages
- Removed the restricted data cache (it wasn't used since OS 3.0)
- unify functions for restricted and full data: Just one function, which
accteps an optional user_id: If it is None, full data is returned, and
with a user id given, the restricted data
- More atomic access to redis, especially for:
- Check for data-existance in redis and do an auto-ensure-cache.
- Speedup through hashing of scripts and redis' script cache.
- Save schema version into the redis cache and rebuild, if the version
changed
Client changes:
- Simplified the ConstantsService
- Fixed bug, when receiving an autoupdate with all_data=True from the
Server
- Fixes white page at 'legalnotice' and 'privacypolicy'
- Fixes the button to collapse the sidenav
- Fixes a too long text in the headbar
- Reworked the login data service:
* make order of operations clear
* prevent setting invalid data into the storage
Server:
- ListOfSpeakers (LOS) is now a speprate model, containing of an id,
speakers, closed and a content_object.
- Moved all speaker related views from ItemViewSet to the new
ListOfSpeakersViewSet.
- Make Mixins for content objects of items and lists of speakers.
- Migrations: Move the lists of speakers from items to the LOS model.
Client:
- Removed the speaker repo and moved functionality to the new
ListOfSpeakersRepositoryService.
- Splitted base classes for agenda item content objects to items and
LOS.
- CurrentAgendaItemService -> CurrentListOfSpeakersSerivce
- Cleaned up the list of speakers component.
