HeroMatchMaking

OK I fixed a lot of the bugs, but there are still bound to be some in there. It's on my production server, and it seems to be working just fine.

make a world called matchmaking (or change your config.yml) so that it doesn't create arenas in an existing world!! Don't cry to me if you config this wrong and get an RTS arena pasted in your spawn.

• It prevents you from using any commands except /suicide in the arena (I'll make this configurable soon).