Fix detction of updates if performed by other app. In this case we get two updates to the playlist very close together


git-svn-id: http://cantata.googlecode.com/svn/trunk@4754 b1e49159-3266-923f-9c3e-04f16369770a
Display title then artist


git-svn-id: http://cantata.googlecode.com/svn/trunk@4755 b1e49159-3266-923f-9c3e-04f16369770a
In playqueue, if song's artist is different to album artist, then show song as 'title - artist'


git-svn-id: http://cantata.googlecode.com/svn/trunk@4756 b1e49159-3266-923f-9c3e-04f16369770a
Adjust item size if touch-friendly


git-svn-id: http://cantata.googlecode.com/svn/trunk@4757 b1e49159-3266-923f-9c3e-04f16369770a
Use musicbrainz album id to group albmus - if present


git-svn-id: http://cantata.googlecode.com/svn/trunk@4758 b1e49159-3266-923f-9c3e-04f16369770a
Use musicbrainz album id for album key whenever possible.


git-svn-id: http://cantata.googlecode.com/svn/trunk@4759 b1e49159-3266-923f-9c3e-04f16369770a