Map generation on match start. Revert 967f50.
Use appropriate access modifiers to allow addons to override.
Players without teams should not throw NPEs.

Not sure how FFA game modes should be implemented, but in the short term, ensure that a player without a team does not cause an exception. FFA should probably be implemented with singleton teams.
Avoid naming collisions in AutoReferee's command manager.
Allow console to set world by providing player or world name.
Relax restrictions on prematch damage tracking.