Add Embed responsive utility
Merge branch 'responsive-embed' of https://github.com/boulox/bootstrap into boulox-responsive-embed

Conflicts:
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
Added .list-group-item.disabled

Added support for disabled List group item.
Update variables.less
add .sr-only-focusable; fixes #12259
update docs to include+use .sr-only-focusable
Documents #10140
Merge branch 'master' into document_popover_focus
add posibillity to hover links and not background in list-groups
Defined and use variables for .panel-heading & .panel-footer padding
Fix UAs required message position on grouped radio buttons

Instead of not rendering the element at all with display:none, use opacity:0 and z-index:-1 so the radio element has a defined position on the document and user agents can show the required message in the right place.
updated qunit test reporting so sauce labs can report failing tests
Correctly set .btn-link colors in a .navbar and .navbar-inverse #12694
Fixes #12756: Ensure horizontal dls are cleared by moving the clearfix out of the media query
Merge branch 'master' into pr/12813

Conflicts:
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css
Update modals to use more consistent padding—modal body and footer now match modal header
Remove second tbody from Supported browsers

Removed the second tbody from "Internet Explorer 8 and 9" Table
Merge pull request #12818 from hebbet/patch-1

Remove second tbody from Supported browsers
Fixes #12801: Add padding to the bottom of .form-control-static to match height of standard form controls
Merge branch 'master' of github.com:twbs/bootstrap