Bukkit

FIXES: - Fixed a dupe caused by event cancel lag. - Fixed a dupe caused by clicking a null slot - Fixed a dupe caused by keyboard click checks firing too late.

- If you click a shop and it does nothing in the menu, This means you have messed up on the shop somewhere in the config. Find what shops do and dont work. There should be a point in the menu where they stop working. Find that point then focus on that area in the config for errors. Can be as simple as CAPS are wrong, and dont match the shop in shops.yml or a missing space.