Add Parameters to Physics, remove BulletPhysics
Add WorldObject::initialize, re-add HUD text
Comment out failing tests
Re-enable legit tests
Remove center as parameter to WorldObject, remove tests
Remove initialize, add accessors to physics
Formatting
Merge remote-tracking branch 'origin/master' into nospecialphysics

Conflicts:
	src/worldobject/worldobject.h
Merge remote-tracking branch 'origin/master' into nospecialphysics

Conflicts:
	src/worldobject/worldobject.cpp
	src/worldobject/worldobject.h
Merge pull request #247 from voxelinc/nospecialphysics

Refactor WorldObject and Physics