- Browse album by exact id (uri) instead of fuzzy search on name, artist
  and year, which failed when e.g. year was empty
- For collection albums (with various artists) now the 'various' artist
  (albumArtist) is shown in the artist listing, just like it's done in the GM
  web interface
Readonly perl constants can't be passed to the python code apparently,
so constants moved to the python code to make them work again
- small change to check if an album is from a 'various' artists
- bugfix for track where 'albumArtist' is not present
(both changes from a patchfile by @hectus)
Merge pull request #14 from huubbouma/master

Some small fixes for various artists, exact album search, and not passing perl constants.