first cut at reading and mapping submeshes to named models
some cleanup
moving RenderArgs into shared so it can be used by overlays, first cut at ray picking against submeshes
pass the submesh name as extraInfo in the ray pick result
move the _model.setScaleToFit( largest dimension) to the setProperties not update
added example script for lobby model overlays
Merge branch 'master' of https://github.com/highfidelity/hifi into rayPickSubMeshes
fix build buster
Merge pull request #3690 from ZappoMan/rayPickSubMeshes

Ray pick sub meshes