#19 Give games an "owner"

[Chad McHenry]

Games should have an 'owner', which is whoever started
the game or the next available player if owner quits.
Owners would have the ability to control the game.

Initial abilities should include "/kick <player>".

Also see
https://sourceforge.net/tracker/index.php?func=detail&aid=1039246&group_id=103866&atid=636191