Hands, Player, Collisions (Fixed)

[njbrown]

Hands:

• Users see hands in the player instead of the controllers
• Added new grab node type for picking up objects
• Users can grab objects with or without grab nodes placed under them
• Users can grab objects with or without physics bodies added to them

Player:

• Player is now a separate form the Editor; it no longer shares SceneViewWidget

Collisions:

• There are now compound collision shapes
• Physics objects grabbed with hand can interact with other physics objects in the scene
• Viewers now have a character controller attached to them allowing them to collide with objects in the scene