Be able to delete track on Release view

[sphildreth]

As an editor a user should be able to select tracks on a Release detail view and select "Delete Tracks" or "Delete Tracks And Files" and the system deletes either just the database record or the database record and the physical file (if any) for the track. Once this occurs perform a Release rescan server side.

Here is an example of why this is needed:

[sphildreth]

This can be done on the Track detail and for v1 that is sufficient.