Merge pull request #1069 from PhilipRosedale/master

Move to 'european' comfort distance for chat circle
Decrease the distance between members, increase the influence of the circle,
don't rotate members.
Merge pull request #1070 from ey6es/master

Decrease the distance between members, increase the influence of the cir...
Fix for glow flickering.
Widen the circle influence, increase the approach rate.
Merge pull request #1071 from ey6es/master

Fixed glow flickering, tweak circling again.
Need to halve the target angle, because both participants will be moving.
Use randomness to resolve cases where two participants are on top of one
another.
Merge branch 'master' of https://github.com/worklist/hifi
Merge pull request #1072 from ey6es/master

Another slight fix for circling.
Fix mute button, visualize gaze direction when showing headMouse
Merge branch 'master' of https://github.com/worklist/hifi