Time for a terrifically tremendous toe tapping update folks!

This basically just cleans up some bugs that I introduced since the 1.6 update.

Fix bug that caused LARGE_ITEM displays to not be able to be removed after a server restart. (except by running the /shop item refresh command, but you will no longer have to do this)

You can now place blocks next to shops that have LARGE_ITEM displays.

Fix the permission bug that caused build limits to be set to 0 if there was not one set at all.

Fix bug that was throwing errors at people who clicked on Ender Chest Shops.