Merge pull request #1259 from ZappoMan/bugfixes

added some debugging to see why the servers are spinning out constantly ...
fix new VoxelPersistThread behavior so it's actually only checking dirty bits every each persist cycle
Merge pull request #1260 from ZappoMan/master

fix new VoxelPersistThread behavior so it's actually only checking dirty bits every each persist cycle
add Paste To Voxel
Merge branch 'master' of https://github.com/worklist/hifi into paste_to_octalcode
Merge pull request #1261 from ZappoMan/paste_to_octalcode

add Paste To Voxel
Don't track the mouse in mirror mode.
Set the head scale for other avatars.
Merge pull request #1267 from ey6es/master

Couple of tiny fixes: head scales on remote avatars, disable mouse eye tracking in mirror mode.
Fix for pupil dilation on Ryan's face.
Added a slider in the preferences to control the amount of Faceshift eye
deflection.
Merge pull request #1268 from ey6es/master

Fix for pupil dilation on Ryan's face.
fix to crash on deleteNotify