Convert v4 HTML to HBS files
Convert v4 Accessiblity guides to HBS files

- Added missing Font Awesome references
- Fixed some bad anchor tags in the guide
- Fixed "fa-picture" to "fa-picture-o" in the guide
Convert v4 Design guide to HBS
Convert v4 Roles guide to HBS
Convert v4 Usablility guide to HBS
Convert v4 Writing guide to HBS