Made it so if you give a player the permission 'backpack.5', for example, and then they put items all over it, and then you give them the permission 'backpack.2' they will still see what was previously in those slots, and if you give them 'backpack.5' again, they will have ALL their items back.
Fixed the fact that if you put an item in the last slot, they would have previously lost it.
