* Banned users can't login/is unused
* Voting made sense to be separated for danbooru, but not us
* Verified is unused
Previously these would also be part of the body attributes, but I can't
see how they would be useful there
"The serialization of the vote and favorite actions was likely excessive
even in the production configuration, and it has been relaxed to use
repeatable_read in this implementation. The locks on rows were also
removed as they do not have strict locking requirements with this transaction
level to my knowledge."
While the logic was not particularly complex or spread out it was
made more complicated by the models being dependant on one another.
This creates a central entry point for voting and favorites and
coordinates all transactions.
TODO: upvote/downvote/fav metatags in tag section result in an error
because they attempt to change the transaction isolation mode during
an outer transaction.
