Backups

New: Backup drone's database and configuration from the UI
New: Download Backup files from the UI

Fixed: Run a database backup before upgrade
Provider testing improvements

New: Test button for indexers in UI

Fixed: Testing download clients shows error messages in UI
Fixed: Testing notifications shows error messages in UI
Fixed: Series type won't flash back to Standard when adding an Anime series
Fixed: Errors after importing episodes
Fixed: Series Actions on series detials page spin on center
Fixed: UI loads properly even if UI settings cannot be persisted
Backup "type" folders created properly
Fixed newznab testing and saving
Updated sorting architecture so the collections can specify the sort-oddities instead of in backgrid column definitions.
Fixed: Sabnzbd now verifies the category configuration.
New: It is now possible to use Completed Download Handling with remote download clients by specifying the local mount in settings.