Initial test for JSON skinnedmesh animations  Refs #2981
Add JSON skeletal & morph target animations (interim)  Refs #2981
Editor fix for animations.  Handles node properties with '$' identifier.
Clean up the Three.js JSON model testcase.  Refs #2981
Respond/Fix PR #85 findings.
Merge pull request #85 from virtual-world-framework/branch/json-skinnedmesh

Three.js JSON Model loader and animations, Refs #2891