* wip
* first pass at elasticsearch; movies kind of work
* use field name constants
* properly sort search results
* fix some crashes
* fix page map/jump letters
* optimize page map using terms aggregation
* index all item types
* optionally use elastic search
* code cleanup
* automatically rebuild lucene index after improper shutdown
* update changelog
* rework plex movie library scanner; add unavailable media item state
* plex television scanner improvements
* reset plex etags as needed
* update changelog
* add music videos library
* add music video tables
* first pass at music video library scan
* support music videos in playouts
* display music videos in search results and collections
* fix music video thumbnails
* remove some obsolete fields
* add letter bar with no links
* use lucene for search, add paged search results
* add search index version
* index library_name; rebuild index when folder is missing
* maintain index as local movies change
* fix tests
* maintain index as local shows change
* maintain index as plex movies change
* maintain index as plex shows change
* code cleanup
* add duplicate filter to search
* add links to letter bar
* code cleanup