Example: Fix WebVR Sandbox

Workaround for #12883

Removes a runtime error in `onWindowResize()`. `composer` is not defined.

fix the order of events in onMouseWheel

# Conflicts:
#	examples/obj/walt/WaltHead_bin.js
#	examples/obj/walt/WaltHead_slim.js

git should handle the line endings

Simplify and refactor points dynamic example

SAOPass: Update camera near and far plane on each rendering

Because we use primitive values (numbers) for setting the near and far plane we don't have an actual reference to the near/far plane values of the camera. So when these values change we hadn't any chance to easily update these values in the materials.
So I suggest to update them every rendered frame like it is done with scale, kernelRadius, minResolution etc

In my use case for example the near and far plane of my camera is constanctly changing depending on the current distance and size of the shown object. So if I zoom closer to my model the far plane decreases in value and so does the near one.

PMREM: Restore previous renderTarget after update()

WebGLRenderer docs: getCurrentRenderTarget -> getRenderTarget

GLTFExporter/Loader: Add basic tests.

Add GLTFLoader Points/LineBasicMaterial support

WebGLRenderer: Introduce .copyFramebufferToTexture()

info autoReset

Proposal: Support material.shadowSide

Update link & description for WHS