add a helper to the logstash class to stash a value
send the interface startup time to log stash
use the stashValue helper to send the audio-mixer stat
Added various options to test for voxel avatars, manual third person mode
(also, cleaned up the camera switching a little).
Merge pull request #567 from birarda/graphite

stash the interface startup time, add helper to Logstash class for value stashing
Merge branch 'master' of https://github.com/worklist/hifi into opencv
Merge pull request #568 from ey6es/opencv

Head roll, lean from webcam data.
Merge branch 'master' of https://github.com/worklist/hifi into opencv
Don't bother with testing the ignore orientations stuff.