Bukkit

Adds:

• Controls player login by requesting a password for enhancing the server security.
• Sign control for teleporting players to the different games in the server.
• Teleport signs can be placed in any world.

Fixes:

• Some minor bugs in the code.
• Now it is Java 1.7 compatible.

Important: If you're migrating from the previous version it is highly recommended to remove the file config.yml due to there are new configuration keys.