Background update imrovements


git-svn-id: http://cantata.googlecode.com/svn/trunk@4284 b1e49159-3266-923f-9c3e-04f16369770a
Handle updating background in playqueueview class


git-svn-id: http://cantata.googlecode.com/svn/trunk@4285 b1e49159-3266-923f-9c3e-04f16369770a
When transitioning between backdrops in cover view, draw old at correct position.


git-svn-id: http://cantata.googlecode.com/svn/trunk@4286 b1e49159-3266-923f-9c3e-04f16369770a
Cant use -1, id is an unsigned int!


git-svn-id: http://cantata.googlecode.com/svn/trunk@4287 b1e49159-3266-923f-9c3e-04f16369770a
Speed-up MPD response parsing, by only converting strings to UTF-8 when required


git-svn-id: http://cantata.googlecode.com/svn/trunk@4288 b1e49159-3266-923f-9c3e-04f16369770a
Dont load library twice at start-up when cache has been deleted current tab is artists or albums.


git-svn-id: http://cantata.googlecode.com/svn/trunk@4289 b1e49159-3266-923f-9c3e-04f16369770a