run grunt
Merge branch 'master' of github.com:twbs/bootstrap
white → #fff
fix #10732
Merge pull request #10724 from ZDroid/patch-1

white → #fff
Fixes #10694: Remove unnecessary `content` property from `.caret`
Merge branch 'master' of github.com:twbs/bootstrap

Conflicts:
	dist/css/bootstrap.min.css
Remove unused variables.
Lint assets/js/application.js and assets/js/customizer.js.
Update holder.js to v2.1.0.