Revert "player: Skip unplayable tracks in Songs view and error icon is now visible."

This reverts commit e8fb0406e70062e9d90f305f3aa8e441de64a847.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
fix to #44 and cleanup.