Transplanted hemisphere specular from Phong. Also had to go back to using varying for view position as computing it in the fragment shader wasn't really working :S

This is all just guessing. Other people have only diffuse term for hemisphere lights, but there should be also some specular term, in real world shiny things are shiny no matter which light.

This should be closer to what's expected on three.js side.

Moved colors, bumpScale, shininess and anisotropy parameters from lightmap example code to its JSON file.

As suggested by @sole.

Realised that DirectionalLight is "poluting" the scene graph...

See #2372

Use two component normalScale and set eventual flipping per-model. It's quite ugly but it could do the job if we don't find a better solution.

Do not merge yet.

See #2358

Tweaked UTF8Loader while at it. Not sure what's this new Model() thing for...