Adds new settings to ColladaUtils::ImportSettings and TSShapeConstructor::ImportSettings for persistence. Shape will now be re-imported with the original settings if the source art is newer or the cached.dts file has been deleted.
Fixes material transparency blend mode assignment.
Adds implementation for override scale, material prefix and always/never import options.
Reads and applies metadata fields for scale and up axis from formats that provide it.
Eliminates the assimp.log file and redirects log messages to console.log. Verbose logging is enabled in debug builds.
Scale is negated in inverse bind matrices.
Vertex weights are normalized (glTF importer is limited to 4 weights per vert).
Fixed interpolation for animations where the first frame is not at 0.0.
Allows cached.dts version of assimp imported shapes to be loaded.
This commit deals with the problem that the keyframe timestamps are not standardized. Seconds, milliseconds and ticks are used depending on the import format. There is no metadata or property that specifies the format used, so the option is exposed to the user as part of the import options gui.
