Lootbox

Added a chance per item feature!

Example (items section of a lootbox):

- 12 32 name:&6Special_Sand lore:&7Taken_From:|&4Common_Lootbox chance:50

- 268 1 16:2 34:4 name:&4Training_&7Sword

This would give you a 50% chance of getting special sand and a 100% chance of getting the Training sword. The chance most be an integer between 0 and 100!

Also, compatible with CB 1.7.9-R0.1 - I believe it is also compatible with 1.7.2.

It will always add the items to the inventory, but it may say it requires more space than it actually needs