first cut at new voxel scene stats
Merge branch 'master' of https://github.com/worklist/hifi into new_voxel_scene_stats

Conflicts:
	interface/src/Application.cpp
merge conflict fix
New IK method: will be easier to add constraints, adds "gravity" influence to
sap potential energy.
Cleanup on aisle 3.
Active the hand when we have leap hand data.
Apply Leap data directly to skeleton.
Check palms' active state, apply rotations.
Derp; I don't want the length of the scale, I want the average of the
components.
Swap the palms if they're in the wrong order.
Gravity adjustments.
Working on wiring up the fingers.
Removed unused variable, debugging code.
Adjustments to wrist rotations.
More palm fixes.
Attempting the fingers again.
add menu option for voxel server fade in/out and dont remove local voxels when server shuts down
Another shot at the fingers.  Not attempting IK on the anymore.
Merge pull request #1216 from ZappoMan/vs_shutdown_behavior

add menu option for voxel server fade in/out and dont remove local voxels when server shuts down
use virtual deleteOrDeleteLater in NodeData to handle AvatarVoxelSystem