Cleanup for Tags.java Update up to Anki 2.0.25.

- Added FIXME to bulkAdd method. It is unused so won't cause problems, but needs to be fixed when we do use it.
- Fixed query in registerNotes
- Includes commit: canonify tags when saving, and strip quotes (#794) (dae/anki da66844)
Merge pull request #316 from hssm/libanki-cleanup-update-2.0.25

Cleanup for Tags.java. Update up to Anki 2.0.25.