The version of highlight.js in this directory is v9.12.0

The styles that we are not using in pagure were also removed.

This bundle was downloaded from:
https://highlightjs.org/download/

With all the common languages:
* Apache
* Bash
* C#
* C++
* CSS
* CoffeeScript
* Diff
* HTML, XML
* HTTP
* Ini
* JSON
* Java
* JavaScript
* Makefile
* Markdown
* Nginx
* Objective-C
* PHP
* Perl
* Python
* Ruby
* SQL
* Shell Session

and the following additional languages:
* asciidoc
* dockerfile
* lua
