ASDoc fix.

Moving class description from constructor's ASDoc comment to the class's one.
ASDoc fix.

Adding information about default value of property castsShadows and fixing ASDoc comment for property animator.
ASDoc fix.

Moving ambientColor property ASDoc comment to the right place.
Changing color spelling to American English (as assumed in this project).
Adding information about default values for specular, diffuse, color, ambient and ambientColor properties.
ASDoc fix.

Fixing @see references.
Merge remote branch 'NordMike/master'

Conflicts:
	src/away3d/entities/Mesh.as
	src/away3d/extrusions/Elevation.as
	src/away3d/lights/LightBase.as
	src/away3d/loaders/Loader3D.as