failing test for dot in data-parent
use quotes to allow dots in data-parent
Add <main> element

See:
http://www.w3.org/html/wg/drafts/html/master/grouping-content.html#the-main-element

http://www.filamentgroup.com/lab/the_main_element/

http://html5doctor.com/the-main-element/
first prototype of new customizer
Merge branch '3.0.0-wip' of github.com:twbs/bootstrap into 3.0.0-wip

Conflicts:
	_layouts/customize.html
zip js as well …
Merge pull request #9089 from jdiamond/3.0.0-wip

accordion's data-parent can't contain dots
Add <main> element

See:
http://www.w3.org/html/wg/drafts/html/master/grouping-content.html#the-main-element

http://www.filamentgroup.com/lab/the_main_element/

http://html5doctor.com/the-main-element/
Merge branch 'main-element' of https://github.com/kevinSuttle/bootstrap into main-element

Conflicts:
	_layouts/customize.html

Had been updated since I first opened https://github.com/twbs/bootstrap/pull/9217