Update RainbowClay.java

[lluiscab]

Added

• Chests can't be opened or destroyed if they don't belong to your team
• Now we can build on the middle
• Middle chests can't be destroyed
• Wool blocks can't be destroyed
• New death message (It kind of works)

[biels]

Sry, does not compile :/

[lluiscab]

@biels thx x