Added Partially-working Magic Gui

Made a Gui that shows a list of spells the player has available.  Also changed item names to match unlocalized names so correct textures can be found
Merge branch '1.7.2' of https://github.com/jaltekruse/WhatEverYouWantMinecraft into 1.7.2
Fixed Server so it doesn't crash right away, still bugs

Fixed the server so it doesn't crash to a ClassNotFoundException. Also changed the magic GUI so it includes spell costs and icons of the spells