VTKLoader: Removed computeVertexNormals(). See #5389.
Editor: Menubar titles no longer limited to 50px.
Editor: Added autosave checkbox.
Add property name translation for PLYLoader

The property names in PLY files are given as strings, some
implementations may use different names for common properties.
This commit adds a translation mechanism based on a map,
which is specified via the constructor.

Example with no translation:
  loader = new THREE.PLYLoader();

Example with translation:
  loader = new THREE.PLYLoader({
	  		diffuse_red: 'red',
			diffuse_green: 'green',
			diffuse_blue: 'blue'
		});
Parallax mapping example
Merge pull request #5397 from shapespark/parallax-mapping

Parallax mapping example
small bugfix: Geometry parameters weren't exported
Merge pull request #5401 from kintel/sceneexporter-fix

small bugfix: Geometry parameters weren't exported
Editor: Minor css clean up.
Minor clean up.
Merge remote-tracking branch 'origin/dev' into dev
Improved documentation of BufferAttribute and BufferGeometry
Fixed BufferGeometry example
Fix a encoding error

When I use this build tool, it occurs this error:

	D:\3rd_projects\three.js-master\utils\build>python build.py --include common --i
	nclude extras --output ../../build/three.js
	 * Building ../../build/three.js
	Traceback (most recent call last):
	  File "build.py", line 106, in <module>
	    main()
	  File "build.py", line 65, in main
	    tmp.write(f.read())
	UnicodeDecodeError: 'gbk' codec can't decode byte 0x92 in position 5904: illegal
	 multibyte sequence

It seems that the reason lies in the default encoding of the `open` function. On my computer it's `GBK` rather than `UTF8`. So I add the `encoding` parameter to it, and then it's just all right.
Fix WireframeHelper for BufferGeometries without offsets

by just creating a dummy offset
Merge pull request #5406 from caseygrun/buffer-docs

Improvements to BufferGeometry and BufferAttribute docs
fix coding style
Merge pull request #5407 from jarvisniu/dev

Fix an encoding error
Build: Quotes consistency.
Reverted #5367.