* support .etvignore files to exclude folders (and child folders) from scanner
* include top-level folder in scanner
* don't always rescan "other" media sources
* add metadata/poster refresh button to media cards
* replace media items tables with card grids
* style cleanup
* add basic paging
* sort and page in the db
* optimize sql for movies
* support movie posters
* resize movie posters and store in cache with channel logos
* fix bug preventing folders with more than 50 chars as local media sources
* support tv posters
* reorganize metadata parsing; only attempt to parse appropriate media type based on media source configuration
* add fallback metadata for movie sources
* only request read access for nfo metadata
* fix tests