Box Level in Unity

Added the box level, we're working at a 1 unit = 1 meter scale. Level
totals a 32 x 32 unit/meter size. Should closely (not perfectly) match
the "PudgeWars" level. Added a Rigid body, and mesh collider. Deleted
every other object in the scene. Put in a new sphere for physics
collision testing. Changed some of the scene settings.