Docs: Reword light.distance explanation.

Docs: Added basic language navigation.

Refactored Detector.js into WebGL.js

GLTFLoader: Rename .setPath with .setResourcePath

Reverse direction of glTF lights to comply with spec changes

Lights: Use inverse-square attenuation w/ distance=0 in physically-correct mode.

As discussed in https://github.com/mrdoob/three.js/pull/14957#issuecomment-424184966.

TDSLoader: Refactor setPath() usage and introduced setResourcePath().

Added navigator existence check in WebGLRenderer

Renamed texture3d examples.

Rename Texture3D to DataTexture3D

Remove webgl_materials_texture_3d.html

Examples: More usage of setPath() and setResourcePath() in loaders.

JSONLoader: Add setPath(), rename setTexturePath() to setResourcePath()

3D Texture simple example

Revert "ObjLoader2: Minimification fix"

Volume rendering example: refactor and clean up