Use fonts instead of icons

[Samuel]

https://coderwall.com/p/r67dyq/using-font-awesome-with-xe-latex

[Jan Küster]

Potentially agree, but with one exception.
It would be great to have FA (or any other font based icon set) without the need for xetex. A solution that works using pdfLatex is a definite candidate for a merge.
Best, Jan

[Jan Küster]

Merged via #2