Multi-disc DiscSubtitle sorting

[paultaylor]

MusicBrainz has the concept of releases (albums) and release groups (albumsets), and we store that data when tagging with Jaikoz/Songkong so there is a sort of a standard field name within releases matched to Musicbrainz, but not a more general concept, but would need MinimServer to support an additional level in its hierachy to be able to do what you want.