move view frustum management to VoxelAgentData class
added printDebugDetails()
first cut at delta view frustum encoding
move view frustum calculation into VoxelAgentData, added last known and current
first cut at delata view frustum encoding
Merge branch 'master' of https://github.com/worklist/hifi into render_voxels_optimization
added new menu items for view delta
added wantDelta, made want bools a bit mask
added setAtBit() utility
tweaks to view frustum delta code
tweaks to view frustum delta code
Merge branch 'master' of https://github.com/worklist/hifi into render_voxels_optimization
tweaks to delta sending
Merge branch 'master' of https://github.com/worklist/hifi into render_voxels_optimization
switched Want Delta menu to use new Qt menus
hide debug messages unless requested
Merge pull request #306 from ZappoMan/render_voxels_optimization

Added "Delta" mode
Merge branch 'master' of https://github.com/worklist/hifi

Conflicts:
	interface/src/Application.cpp
	interface/src/Application.h
Start out with gray, fix coloring smaller portions by (similar to deleting)
breaking up leaf nodes into their components.