M*bert

Added new command: /mbert scores. Added permission node: mbert.allow. Added level specific music and random records after level 8. Experience and armor are now saved like the rest of player's inventory.

• Music doesn't continue to play after loosing a life until getting to the next level.
• Certain mods (like Towny) that prevent mobs from spawning will make the game easy because, well, no real monsters will spawn.
• Mobs that fall of the pyramid will drop items (i.e. raw pork, wool, etc.).
• Also, code doesn't always place mobs on the pyramid 100% of the time.
• Ton of new bugs, probably