* feature(mobile): sync assets, albums & users to local database on device
* try to fix tests
* move DB sync operations to new SyncService
* clear db on user logout
* fix reason for endless loading timeline
* fix error when deleting album
* fix thumbnail of device albums
* add a few comments
* fix Hive box not open in album service when loading local assets
* adjust tests to int IDs
* fix bug: show all albums when Recent is selected
* update generated api
* reworked Recents album isAll handling
* guard against wrongly interleaved sync operations
* fix: timeline asset ordering (sort asset state by created at)
* fix: sort assets in albums by created at
* feat(mobile): use cached asset info if unchanged instead of downloading all assets
This adds an HTTP ETag to the getAllAssets endpoint and client-side support in the app.
If locally cache content is identical to the content on the server, the potentially large list of all assets does not need to be downloaded.
* use ts import instead of require
