Wireframe option, fix for shadow menu group.
Make sure edit colors are either 100% opaque or 100% transparent.
Fix for deferred lighting/ambient occlusion when glow effect is disabled.
Save metavoxel data regularly, as with voxel data.
Timer should be a child of the server object.
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Merge pull request #3363 from ey6es/metavoxels

Metavoxel fixes: added wireframe option, fixed shadow menu group, make sure edit colors are either 100% opaque or 100% transparent, fix deferred lighting/ambient occlusion when glow effect disabled, save metavoxels.dat regularly.