Moved files around, refactored SoundController with custom Editor
script to make adding new cues across different types of surfaces
easier.
Added more placeholder collision sounds to test sound bank
functionality. Now adding more than one sound to a collision list in
the SoundController will tell the SC to play a random one from the list
of sounds.
Merge branch 'm2-physics-terrainCharacterAffectation' into m2-physics