Better AlreadyRegistered exception handling. Contestant name is set to user name in Contest.join_contest().
Better AlreadyRegistered exception handling. Contestant name is set to user name in Contest.join_contest().

zielmicha/satori,zielmicha/satori,zielmicha/satori,zielmicha/satori,zielmicha/satori,zielmicha/satori,zielmicha/satori