add responsive CSS to hyperlinked images when thumbnail caption markup is used

When thumbnail caption markup is used in combination with a hyperlinked image, the image is not responsive. (non-hyperlinked images are fine, like the example in the docs) Adding a selector to apply responsiveness to hyperlinked images when thumbnail captions are used.
Add quick fix to labels and badges in buttons
Don't print .clearfix() comment references
Fix glyphicon class name wrapping in IE
Update navbar.less

fix for issue #11243
add support for button dropdowns in justified button groups
Add missing last column float
Remove redundant comments
Use pkg.homepage
Merge pull request #11657 from ZDroid/homepage

Use pkg.homepage
Fix up new margins on modals by not setting auto until screen-sm-min
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