Merge pull request #11398 from thelukemcdonald/master

Don't print .clearfix() comment references
Fixes #11351: Correct grid class reset on input groups by using attribute selector, not an old class from v3 betas
Merge branch 'master' of github.com:twbs/bootstrap
Merge branch 'master' into pr/11648

Conflicts:
	dist/css/bootstrap.min.css
	less/grid.less
Fixes #11544: Add color: inherit; to .panel-title to ensure proper text color when customizing @headings-color
Fixes #11515: Reorder the headings with body text and text emphasis classes
Fixes #11402: Set width: auto; to select.form-control within .form-inline
Fixes #11444: Use @navbar-padding-vertical for nav links padding
Fixes #11420: Update migration guide on split of .visible-/.hidden-desktop into .visible-/.hidden-md and .visible-/.hidden-lg
Fixes #11277: Drop the abbr element from the .initialism selector
grunt
Merge pull request #11217 from ZDroid/nest

Add quick fix to labels and badges in buttons
Fixes #11268: Account for badges within buttons by matching background to text color and text color to background
Merge branch 'master' of github.com:twbs/bootstrap
Fixes #10716: Update what's included docs to add info on both download options
grunt
Shorten sticky footer examples footer content to prevent wrapping
Fixes #11623: Reset position to static for grid columns within tables to unfuck borders in IE9/10 and Firefox
Remove browser default top margin from dl elements
Fixes #11658: Increase min-height of .radio and .checkbox for horizontal forms to ensure alignment of content below