After altering filename scheme from track organizer, save settings.
BUG: 457


git-svn-id: http://cantata.googlecode.com/svn/trunk@4470 b1e49159-3266-923f-9c3e-04f16369770a
Don't set year or disc in tag editor for 'All Tracks' unless they are non-zero
BUG: 458


git-svn-id: http://cantata.googlecode.com/svn/trunk@4471 b1e49159-3266-923f-9c3e-04f16369770a