Remove client's teams only when game is running and exit status is 'incorrect exit'. Frontend still sends excessive ROUND_FINISHED, so the bug is not fixed completely.
- Increase server version number due to rooms list protocol changes
- Frontend doesn't allow to play on old server
Revert most of 033e4a8a9c74 and 9d501dc22f71 (see
bug #362)
Start switching to rooms list model. To be continued.