Massive Refactor

Right now there's only minimal testing in place, but I wanted to give you a chance to start looking through the refactored code. There's a good deal left to do, like refactor renter and host, but I did my best to make it so at least the wallet and the miner were working.

The state code has been cleaned up quite a bit, a lot of data structures removed or refactored. The core has been made essentially useless though I'm going to need some of the tests so I've kept some of the files around temporarily.

More to come.