I found that deleted and restorted tracks were incorrectly showing up in
the "New Tracks" playlist. I can fix this by saving the track added date
when the tracks is deleted. The only thing I can't do easily is get the
added date for tracks that have already been deleted, so I set this to
the date of the database upgrade.
Fixes: #64 ("Save the tracks.added date when deleting")
Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>