Font icons from [Fontello](http://fontello.com/).

## Modifying font stack
To add/remove/change icons to the font:
1. Upload the `config.json` to [Fontello](http://fontello.com/).
2. Use web app to modify selected fonts.
3. Download new webfont package. 
4. Replace font files and `config.json` in this directory with updated versions from download.
5. Update /wdn/templates_4.0/less/base/text.less with new CSS class rules.