Start of glTF defaults
Updated glTF examples to dev3
Update glTF renderer to dev.  Still need to update animations
Update animations for dev-3
Merge gltf to gltf-dev3
Start of gltf statistics
Display mesh stats on mouse over
Merge branch 'gltf' into gltf-dev3
Merge branch 'gltf' into gltf-dev3
Merge branch 'gltf' into gltf-dev3