meshphongmaterial normalMapScale -> normalScale

* no more limitation on dragging area
* drag cubes // to camera front/back planes

* Remove arguments to allow optimalisations

* Change constructor based on @mrdoob's argument

* Fix issue with renaming of argument

* convert space to tabs

* cleanup docs

* don't forget the linefeed in docs

* docs cleanup

* Update Color.html

It became unnessecary.

* Fix VREffect support for webvr-polyfill (#8712)
- correctly set `isPresenting` in full screen mode
- webvr-polyfill fires fullscreenchange in VR mode
- fix needed for setting main window to full screen while presenting

* Code clean-up (#8748, #8712)
- Added parentheses to clarify per @mrdoob
- More spaces
- cast `isPresenting` to boolean

* Check if vrHMD is undefined (#8748, #8712)

* Improved precision of RGBA fixpoint packing.

* Added switch to enable double-sided shadow casters.

- Off by default, see #8692

* Updated WebGLRenderer docs, shadow mapping.

* Enabled back face shadows, webgl_clipping_advanced.

* default value for constructor autostart

* document default values for optional parameters

* Revert "document default values for optional parameters"

This reverts commit f1d33aa28401658e3622852755a1b5cb7b0e15c6.

* document defaults for raycaster methods

* Removed leftover inclusion of AnimationClipCreator.

- See #8677
  https://github.com/mrdoob/three.js/issues/8677#issuecomment-213629279

* Clarified AnimationMixer loop mode handling.

- See #8719

* remove usage of parameters in setFromMatrixColumn

* This fixes the usage of setFromMatrixColumn

No vertex and no index for cap with 0 radius

See #8685

The indexCount was rigth but the vertexCount was wrong. The squares on
each plane (face) have common vertices

* MTLLoader: Deprecate setBaseUrl in favor or better named setTexturePath.
Make sure MaterialCreator.baseUrl is not undefined if no path/texture path is set.

* MTLLoader: Automatically resolve texture base path from .mtl source URL if not explicitly set with setPath or setTexturePath.
The URL parameter to .parse(text, url) is passed in if you use .load(). For external use it is optional and preserves earlier behavior if not passed in.

* MTLLoader: Use single quotes consistently. Make params object property setting easier to read.

* MTLLoader: Don't overwrite already found diffuse texture like is done with bump map. This might change behavior for bad materials that define 'map_kd' multiple times.

* MTLLoader: Remaining double quotes to single ticks, also in documentation.

* MTLLoader: Remove auto resolving base path from .mtl source URL.
Add documentation to load and other important functions.
Remove now redundant call to .setBaseUrl in obj/mtl loader example. setPath is enough if the .mtl and textures have the same base path (documented).

* MTLLoader: Dont break parsed texture references that are already absolute URLs.

* MTLLoader: Fix doc typos.

* MTLLoader: Move utility function inside the function that uses it.

* MTLLoader: Use case insensitive regexp instead for abs URL checks.

* Update ISSUE_TEMPLATE.md

* Update ISSUE_TEMPLATE.md

If we use zoom, `camera.fov` is not change. By replacing `camera.fov` by `camera.getEffectiveFOV`, the correct FOV is get.

* ObjLoader: Implement support for multiple materials inside a geometry/object.
- Tracks material declaration occuring mid face declaration
- If object has multiple materials MultiMaterial is creted and geometry groups are created.
- This approach is better than splitting into separate objects: 1) we are creating as many objects the file defines (correctness) 2) The full geometry would be duplicated into
  two objects, afaik this uploads the geometry multiple times to the GPU (perf, i had test asset that had >400 submeshes with 1-6 geometry groups each).

Fixes #8681 #8640
Updates #8203 (fixes OPs 2. point)

* OBJLoader: Code cleanup and three.js style formatting.