Mergable: WebGLRenderer.js: changed so camera.matrixWorldInverse is used instead of camera.matrixWorld.

Work-in-progress.

Refactored everything to use CamelCase naming for properties. Plus some smaller fixes here and there.

Went through all examples, all should work.

JSON files exported from Blender / converted from OBJ files still use underscored property names internally. I don't know, should these also be changed?

- Wrong in last commit, now the inversion of position is removed

- Changed so it sets an ordinary matrix. Also removed inversion of position, which broke A LOT of the examples.

WebGLRenderer:
- Using camera.matrixWorldInverse instead of camera.matrixWorld
- Changed frustum check to camera.frustumContains( object );
- Moved cameraInverse * matrixWorld to vertex shader (needs testing!) (note: normals not fixed yet!)

Object3D.addChild:
- Recurses up through hierarchy until reaches scene and adds itself to scene.objects/sounds/lights

Camera:
- Changed inverseMatrix -> matrixWorldInverse

I don't remember when was the last time I used them. Current Web Developer Tools do this already for you.

Color::updateRGBA ⟶ Color::updateRGB

Blender plugins folder rename.

Added RequestAnimationFrame system to the new examples.

Sound3D ⟶ Sound

Yet more reformating.

Object3D::globalMatrix ⟶ Object3D::matrixWorld

Added hierarchy examples.

I forgot to update scene loader to reflect new way of handling textures :S

Most of the examples or working again as usual. Only `webgl_scene_test.html` and `webgl_ribbons.html` left.

Terrains finally have proper controls ;)

Now you can add keyboard + mouse camera control with a single line, just change camera type and add parameters:

 camera = new THREE.QuakeCamera( { fov: 50, aspect: window.innerWidth / window.innerHeight, near: 1, far: 10000,
	                           movement_speed: 1, look_speed: 0.002, nofly: true, look_vertical: false } );

Thanks to mrdoob for suggestions ;)