Added rotation and scale to overlay anchers
Don't compute avatar anchor specs if uneeded
Merge branch 'master' of https://github.com/highfidelity/hifi into anchers_apply_rotation_and_scale
Merge pull request #2878 from murillodigital/master

CMake find LibOVR
Fixes filesystem issue between Qt and Windows
Merge pull request #2874 from Atlante45/anchers_apply_rotation_and_scale

Added rotation and scale to overlay anchers
Merge pull request #2880 from murillodigital/master

CMake find LibOVR
Merge pull request #2879 from Atlante45/win_fix_for_included_scripts

Fixes filesystem issue between Qt and Windows
added isLocked() to lock the ground plane in hq
slight DRY
Merge pull request #2881 from ZappoMan/lockgroundplane

Lock the ground plane model in hq