* fix embedded subtitles from media servers
* fix plex external subtitles
* fix artwork bug, delete orphaned subtitles
* jellyfin subtitles work again
* emby subtitles work
* rescan all media server libraries
* start to stream directly from plex
* update metadata and statistics with one plex api call
* stream movies from plex
* scanning bug fix; update changelog
* support external subtitles in local movie libraries
* code cleanup
* simplify subtitle updating
* skip external subtitles from media servers
* fix plex subtitles
* add explicit warning for zero/invalid duration media items
* set dateadded on plex media versions
* add media stream table
* save local media streams to db
* save plex media streams to db
* add preferred language settings (no validation)
* use preferred language if possible
* code cleanup
* proper language code validation
* force scan of all libraries to pull in media streams