submitting player info from lobby

[a-powelson]

Current thoughts:

• Each player can should only modify their own info
• A message is broadcast every time somebody chooses or changes something so it's 'live' for all players
• Server makes sure that only one spymaster is present per team
• Server makes sure each team has at least two players (a spymaster and a guesser)
• Player info is being updated in the server as the lobby is open and changes are happening, so no extra info needs to be sent on game start