Working with scss in foundation

In the media directory:
- A `package.json` file have been added in order to get the npm packages
  used to convert scss files into css.
- A `gruntfile.js` as been addded in order to convert scss files into a
  style.css file automaticaly
- foundation is now imported with scss files
- askbot less files have been converted to scss and added into a scss
  directory