* use select instead of autocomplete for playout editor
* use select instead of autocomplete for filler preset editor
* reset selected collection when changing collection type
* use select instead of autocomplete for multi collection editor
* more select
* more select controls
* first pass at refresh-all-metadata by source
* add version to startup logs
* lock media source during refresh
* fix local media source "name" in collection editor
* optimize scanning so playouts only rebuild when necessary
* support more poster file types
* more scanning improvements; check for missing posters during scans