* Fix MB recording ID parameter name for ListenBrainz submission
This follows the ListenBrainz API documentation.
Fixes#1657
* Rename MediaFile.MbzTrackID to MbzRecordingID
This better reflects the actual data. That the MusicBrainz
recording ID is stored in file metadata as musicbrainz_trackid
is a historical artifact.
* Rename database column mbz_track_id to mbz_recording_id
Philipp Wolfer