我正在考虑建一个Tournament的Website，这样可以永久性地记录我们所有的
比赛，也方便管理。目前计划的功能有：
* Admin can create/update tournament
* player can create id in this system.
* Player can register for an open tournament.
Admin can create rounds for a tournament.
Admin can arrange games between players in each round.
Players can log the game result for games they played.
(This is to save admin's time and trust-based)
Everybody can view tournament information. However, only authenticated
users can access priveldged informations.
打*号的
