ColladaLoader: added correct surface/sampler sid mapping to support surfaces with multiple textures (e.g. color + normals)

The following examples where broken on mrdoob.github.com and when
viewed through a local python web server. file:// worked.

webgl_loader_collada.html
webgl_loader_collada_keyframe.html
webgl_loader_json_blender.html

This reverts commit da1d2a66.

ColladaLoader is apparently creating parameter objects looking like this { "color" : undefined }

Added support for picking up <double_sided> flags inside <effect>/<extra>, applying it to the Material. This is half of Issue #2280.

Changed ColladaLoader to create SkinnedMesh using bone uniforms instead of newly default bone texture.

This just gets back to using the old way, though this whole skinning thing in Collada is weird and should be maybe rewritten - skinning is baked into morphs but then SkinnedMesh is still used which means skeleton is getting updated all the time even while this has no effect on already baked morphs.

Fixes #2243

Tomorrow Geometries and CanvasRenderer.

Added support for mesh vertices input source (non indexed in geometric primitive) texture coordinates,TEXCOORD, and color.

I tried to move BinaryLoader to /examples/js but SceneLoader needs it.
Curious to hear what people thinks about this change.

(Phewww!) I'm sure there are still things I missed...

ColladaLoader was not setting the emissive color property for common shader materials. It was also not setting the emissive property for an emission texture to all 1's.

Minor optimizations and tweaks to make it a better example. Removed extraneous work in setting up the animation loop. Added support for array-style target addressing according to COLLADA spec. Added support for matrix transform updates. Added support for hierarchical animations as defined in COLLADA spec (Credit to ekitson).

Updated the camera object to match the COLLADA schema elements and added orthographic camera support.

Adds image child element support to the effect profile_COMMON element. In addition to the library_images top level element Textures can appear in library effects and referenced by a surface.

Fixed ColladaLoader to create appropriate materials. Updated monster DAE to look better with phong shading.

(ERROR - variable instance_material is undeclared)

Adds a check for the instance when normals are provided as part of the vertices element in the collada file and supplies the normals from there (as per the collada spec). If normals still aren't supplied, this defaults to calculating the vertex normals via Geometry.computeVertexNormals().

Collada files normally name the materials, so this adds the name property to the material and puts that name value into it.

primitive input array offset can have a shared
value. The loader assumed inputs.length as an
index. Changed the loader to use a max offset
value. An example of shared offsets is the input
semantic TEXTANGENT and TEXBINORMAL sharing offset
values. 

Conflicts:

	src/extras/loaders/ColladaLoader.js