See:
* https://www.w3.org/TR/css3-grid/#property-index
* https://drafts.csswg.org/css-grid/#property-index
* https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout#CSS_properties

Closes #1705.

For example, highlight `file` as a builtin when appearing by itself,
but not in a construct like `obj.file`.

Fixes #1542.

* Add newly standardized HTML elements to filetypes.html

To enable highlighting them as keywords in HTML documents, add
the following elements defined in W3C HTML 5.1
(https://www.w3.org/TR/html51/fullindex.html#index-elements):

- menuitem
- picture
- rb
- rtc
- template

as well as the following elements defined in WHATWG HTML Living Standard
(https://html.spec.whatwg.org/multipage/indices.html#elements-3):

- math
- slot
- svg

* Add newly standardized HTML attributes to filetypes.html

To enable highlighting them as keywords in HTML documents, add
30 attributes defined in W3C HTML 5.1
(https://www.w3.org/TR/html51/fullindex.html#attributes-table)
and a further 15 attributes defined in the WHATWG HTML Living Standard
(https://html.spec.whatwg.org/multipage/indices.html#attributes-3).

* Sort the list of HTML keywords

* cmake cs keywords

* cs and cmake keywords update

c sharp keywords https://msdn.microsoft.com/en-us/library/x53a06bb.aspx

* reviewed cmake keywords

reviewed cmake keywords according to https://cmake.org/cmake/help/v3.0/manual/cmake-commands.7.html

* public private interface

* cmake alphabetical kws

* comments

Update keywords with https://haxe.org/manual/expression.html#keywords.

`trace` is kept although it's not a keyword, because it was already
there and http://try.haxe.org/ highlights it identically to some other
keywords.

Add parfor to Matlab keyword list

Add `parfor` to the list of keywords to be highlighted in Matlab script sources. `parfor` is a Matlab keyword that can be used in place of `for` to achieve parallel processing.

This doesn't support nested templates or escaped `es, but at least
handles the most obvious cases for now.

Part of #934.

Closes #1339

Related to #1116.

`lexer.cpp.track.preprocessor` lexer properties affects which styles
are used, and we don't set those, so no filetype inheriting C styles
should set it to 1.

Similarly, some properties like `styling.within.preprocessor` are
mostly general settings rather than selecting syntax details, so they
should probably match in all filetypes for consistency.

So, inherit the C lexer_properties everywhere C styles are used, and
only override specific properties in the inheriting filetype.

We don't set the styles for inactive preprocessor sections, so we
should make sure they aren't used.  Also, Haxe has different
preprocessor directives than C does, which confuses LexCPP tracking
anyway.

Fixes #936.

Those are SciTE-specific things that Scintilla itself never used,
and that were simply erroneously imported into Geany.

Fixes #1102.

Haskell single line comments consist of at least two dashes "--",
not followed by special symbol.
So in practice everywhere in code you will see a space following "--".
Reference: Haskell 2010 Language Report -> Chapter 2 -> Lexical Structure

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes
http://www.ecma-international.org/ecma-262/6.0/#sec-keywords
http://www.ecma-international.org/ecma-262/6.0/#sec-constructor