Code review comment for lp:~mblayman/entertainer/clean-messages

OOPS, sorry, I certainly meant to target this branch to future.

Dependent on working-sdist (which I guess is just future now).

This is just some work to clean out a bunch of junk in the backend and try to separate the client from the backend in a more clear manner.

I did a bunch of analysis of what we are/aren't using in terms of messages. This led to some nice cleanup and removal of some methods that simply weren't needed.

I know this may not seem like important work, but it means that there will be less pain when it comes time to completely remove elements of the backend that exist in the client code. Less contact points means less work in the future.