Removed uneccessary classes and imports

Made code cleaner by removing classes we are not using due to our 1.7 update. Removed import references to classes
Merge branch '1.7.2' of https://github.com/jaltekruse/WhatEverYouWantMinecraft into 1.7.2
Merge branch '1.7.2' of https://github.com/jaltekruse/WhatEverYouWantMinecraft into 1.7.2
Added Mana Bar

Added a mana bar that displays in the top-left corner. Added heal spell, and changed spell class so mana only drains if the spell can be cast (for instance, you can't cast a heal spell
at full health)
Merge branch '1.7.2' of https://github.com/jaltekruse/WhatEverYouWantMinecraft into 1.7.2
Mana regeneration

Made it so mana slowly regenerates over time. Changed magic lightning so it damages player less
Merge branch '1.7.2' of https://github.com/jaltekruse/WhatEverYouWantMinecraft into 1.7.2