WIP destroy track
WIP destroy track; using File instead of IO
Trying just file
WIP saving yaml
WIP save cassette to yaml file
WIP Track tests are failing
Making track spec easier to read
WIP saving the file after the test
Fixing correct delete key
Finally got destroy to work for track
Fixing view tests
WIP AJAX for track deletion
More fixes
Cassette delete ajax fix
Added new id method to Track so that it's not an index