Refactoring

Split up pod racer code and moved into a new folder. Also added some
util code. Also moved some comments around and added new ones.
HUD

Changing HUD code to explicitly draw actors. Commented out for now.
Merge branch 'pod_controllers' into merge_test

Conflicts:
	src/PodGameManager.cpp
	src/PodRacer.cpp
Merge pull request #16 from michaelwiktorek/merge_test

Merge