#441 add initial version of styles for JS highlighting

[TimKam]

I added a first proposal for JavaScript highlighting. It's based on the default syntax highlighter of the Atom text editor.
However, I identified a set of issues with the JavaScript lexer of Pygments:

• const should be class .kd
• arrow function => and spread operator ... should be class .o
• functions should get own class
• all global variables and their properties should be added to class .nb
• difference between names after var + let vs. const

I plan to create a fix for Pygments eventually.
The question is: Should we wait for a Pygments fix or merge the best we can get until then as soon as possible?

[Blendify]

I plan to create a fix for Pygments eventually.
The question is: Should we wait for a Pygments fix or merge the best we can get until then as soon as possible?

I would rather see this fixed in Pygments itself rather complicating our theme. Plus this will allow others that do not use our theme to use this syntax highlighting style.

Note that currently, Payments does not work at all with the theme, #448 fixes this.

[TimKam]

Ok, the missing style sheet link explains a lot ;-)
I'll try to fix the remaining issues in Pygments then and close this one for now.