Adjust so normals are disabled if not present

GLTF : Fix no skeleton and no normals

Another quick fix

Fix gltf with static meshes

Fix json having added curve from constructor. Add temp fix

Make MeshTransform public for new exporter

Revert post build until fix is set

Adjustment to add plugins folder

Temp fix, remove post build condition due to issues with auto building

Adjust tangent w for possibly fixing normal maps