Insomnia Commit

Can't sleep so made shitloads of changes.

Most notable -

Level design overhaul - added more tiles, removed zombie spawner tile
(is now transparent)

Restored ResourceManager to how it was. Hopefully we can get it working
with JARs soon..

Scripting. Nothing much here yet.

Splash. Well we do need a menu. Nothing here yet either.

UI Overhaul. Looks snazzy.

There's more, I think... Let me know of any complaints!