added experimental MyAvatar.setSkeletonOffset()

for improved walk animations
Initial reverb implementation

Conflicts:
	interface/CMakeLists.txt
	interface/src/Audio.cpp
	interface/src/Audio.h
	libraries/script-engine/src/ScriptEngine.cpp
Coding standard
Show chat alerts in icon tray only if not already seen
Basic sculpt tool, refactored common material bits in tools.
Merge branch 'master' of https://github.com/highfidelity/hifi into reverb
remove deprecated _engine member from ScriptEngine
Render voxel cursor on heightfields, too.
Fix cmake
Comment fix.
Clear terrain under dual contour surface edit.
Update entitySelectionTools to use camera position/orientation instead of avatar
Fix right/left stretch entity tool
Fix entity tools focus not always using latest entity position
removed old processReceivedAudio method
Gradual progress on converting heightfield portions to dual contour data.
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Merge branch 'master' of https://github.com/highfidelity/hifi into reverb

Conflicts:
	interface/CMakeLists.txt
Added reverb settings to DS settings
Adding the Batch class to GPU