Bukkit

• Add a "fill wand" feature which will add all known spells to a wand when creating.
• Support buying and selling wands via Essentials.

 - Enchanting is a little wonky, something to do with swapping out the item for an enchantable one, I think.
 - Using the creative inventory will destroy any wands you have
 - The Essentials sign "integration" is super hacky. I don't expect issues, but I'm hoping to find a better way.