Moved all the avatar bits to their own subdirectory.
Merge branch 'master' of https://github.com/worklist/hifi into pointy

Conflicts:
	interface/src/Application.h
Working on face rendering as point cloud.
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Working on mesh rendering for faces.
Merge branch 'master' of https://github.com/worklist/hifi into pointy

Conflicts:
	interface/src/avatar/Head.cpp
More work on face points.
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Track features on face, add a mode to render just key points.
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Removed keypoint stuff, fixed stupidity leading to fringed edges (was
linearly interpolating the missing values).
Working on integrating LibVPX for VP8 (9?) encoding.
Rendering of indicator circle in 3D space. Spacing edits in util.
Merge remote-tracking branch 'upstream/master'
clean up of particle system
Merge remote-tracking branch 'upstream/master' into particles
removed deprecated code
First-pass finger motion trails
more clean up