Omitted commit
Created a level loader

First version, block mappings will have to be improved further.
Mesh fixes

Modified the mesh system to update after loading the level and when
blocks are deleted. Still some issues with character drops when deleting
blocks under them.
otw - Got the robot character idling and the right properties to display.
otw - Merged LevelLoader remote branch.
otw testing the new scene with Alex's code.