- added used projects
  - added people/team members

- added json escaped editor for regex tests (exercise editor)

  - this way we don't get the duplicate styles (because of all imports)
  - css shrinked from 220 kb to 50kb
- we also no longer import the css in .tsx files (with reducer file size from 8.7 to 8.4 mb?? not sure about that...)
- added auto prefixer
  - cssnano is not working somehow...

  - this supports now mathjax inside markdown *yay*
- added mathjax via cdn inside index htmls

  TODO: monaco layout system can't handle grid layout, create new files

- finished all (currently) copy to clipboard functions (this will show a short message via react notifications)