Major update for the RC.
- Removed AT Theme Generator - moved to AT Tools module (AT Theme Generator sub-module).
- Added new font type settings, fixed font bugs.
- automate Layout Plugin CSS overrides for sub-themes
- Add CKEditor skin Mimic
- Add links to online docs
- Update font awesome and make it usable in content/editor etc
- Add Click Menu responsive menu option, on by default
- Improve accessibility
- Major review of all templates, cleanups and general improvements (especially menu template)
- Add prefetching for common urls, e.g. cloudflare, google fonts, typekit
- Switch to using the new google fonts in links/docs etc
- Fix critical bug of the book tree not showing
- add JS maps
- Update all Gems/Ruby version etc
- Move tabs to seperate component and make it colorable
- and many other minor updates.