Fix dynamic playlists with no include rules.


git-svn-id: http://cantata.googlecode.com/svn/trunk@5616 b1e49159-3266-923f-9c3e-04f16369770a
Backport artist images in tree/list views to 1.5 branch.
BUG: 570
BUG: 575


git-svn-id: http://cantata.googlecode.com/svn/trunk@5617 b1e49159-3266-923f-9c3e-04f16369770a