Working on cascading shadow maps.
Added getJointCombinedRotation to Models
Fix for shadow map rendering.
Added joints position and combined rotation to scripting interface
Added attaching of model to MyAvatar when close enough
Progress on selecting cascades.
Merge branch 'master' of https://github.com/highfidelity/hifi into click_drag_attach

Conflicts:
	interface/src/renderer/Model.cpp
Retain "simple" shadows, supply cascaded as option.
Make JavaScript audio samples able to be looped

Add a "loop" property to AudioInjectorOptions and provide an example JavaScript file.
snapped attachment to center and scale them to fit
editModels click/drag/attach tweaks
Merge branch 'master' of https://github.com/highfidelity/hifi into click_drag_attach
Better prints in editModels
Merge branch 'master' of https://github.com/highfidelity/hifi into click_drag_attach
fixed display error in editVoxels with new boundaries
Cascaded shadow maps for models.
Merge branch 'master' of https://github.com/highfidelity/hifi into click_drag_attach
Don't attach to joints in range when I grab
Code cleanup
code cleanup