ItemRules

• Added exception catch to Inventory close to prevent errors from happening with what appears to be another plugin trying to close a players inventory after they log out.
• Had to totally rework the Factions integration as they seem to change their interface more often than I change my... er... pants. So if you are using a version of Factions that is older than say... a couple months... this won't play well with it.

* Will not work with mcMMO builds pre #1.4.0
* Even if you can't craft an item, you can use the item in crafting. e.g. you may restrict leather boots from being crafted, but if a player has leather boots, they can dye them.