Minor clean up.
3DSMax Exporter - Corrected specular export, support Phong

Made a correction to the way the specular coefficient is exported; this was using the 3DSMax "Glossiness" attribute. It has been corrected to use the 3DSMax material "Specular Level". The "Glossiness" has been correctly remapped to the "Shininess" three.js attribute.

Additionally included Phong shading, so the three.js Phong material will be used if Phong when used in 3DSMax - without this the bump maps are disregarded as they aren't rendered with Lambert materials (default material when unspecified). Blinn/Metal ShaderType materials will continue to be exported as Lambert.
Scene: Removed matrixAutoUpdate overwrite.
This fixes colada keyframe example but breaks helpers. Time to refactor Helpers...
Updated builds.
Fixed helpers so they work with the new Scene behaviour.
Updated builds.
Added zoom property to cameras. See #5364.
Updated builds.
Fixed OrthographicCamera zoom. See #5364.
Updated builds.
coverter_to_threejs.py: added option to not copy texture files
coverter_to_threejs.py: added option to force y up
coverter_to_threejs.py: removed trailing whitespaces
updated orbitControls to rely on camera zoom property