Change log type for RAOP
Add multiple UI display dependencies support.

Operators supported are & (AND) and | (OR); priority are strictly from left to right. If a dependee doesn't exist, it's considered as in unvisible state rather than just ignored
Make no-artwork condition themeable.
Update default notification theme to support no artwork condition
Add image from Artist: Vargas21 http://www.iconarchive.com/show/aquave-metal-icons-by-vargas21/Music-icon.html