Join a server as a party

Allowing players to be performed by servers to be put on the same teams by forming a party before joining would be really cool for people who enjoy playing as a group. This could be accomplished by allowing the server upon map switch to already display all of the members of the party on a team before they even connect so that auto-balance wouldn't even be needed. An easier implementation would be to just auto-balance the teams such that as many parties are satisfied as possible. The server browser could also display servers that do not have space for your party, or that do not have auto-balance enabled.