add doctype
[#73271218] rmeove apple touch icon style
[#73271218] html for doctype icons & icons
[#73271218] show all doctype icon samples
[#73271162] refactoring icons & favicons
[#73271162] fix indent
[#73271162] refactoring icons & favicons for responsive
[#73271162] add base for logo usage
[#73271162] refactoring style page css
[#73271162] update .small related CSS
[#73271162] update style for typography
[#73271162] merge conflicts
update csscomb
fix some style for Workbench nav
update grunt build gengo.css
use variable
Merge remote-tracking branch 'origin/master' into workbench-related-style
udpate grunt build gengo.css
[#73271218] refactoring
[#73271218] update grunt build gengo.css