Adds cyborg self-renaming at roundstart.

* Cyborgs can now rename themselves when created, like the AI, clown. mime, etc.
* Adds a config option so the server host can disable this if they want to.
* Fixes a bug where, if you were renamed using a renaming board, then changed your module, you lost your new name.

~~Added myself to admins.txt because github's annoying and it doesn't really matter anyways.~~ I guess that didn't get in somehow.

Not sure if borgs made after roundstart are renamed or not since I couldn't test it alone.

Here's a picture.
http://puu.sh/7yFCn.png

I'll make a changelog if this gets merged.