Add Embed responsive utility
fix #12154
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
Fix #12025 and minify styles
fix #12007 by clarifying target of dropdown events
fixes #10495 by forcing .navbar-brand height to prevent it's inner content from increasing navbar height
refactored and renamed grid mixins
Rename pack.min.css to docs.min.css to match with docs.min.js
Fixes #12424: Account for Normalize change on figure element so that we don't potentially screw folks over
Fix #12422: Reset height on multiple select in input size mixin
Merge pull request #12423 from ZDroid/name

Rename pack.min.css to docs.min.css to match with docs.min.js
fix css url
Follow up to #11655: don't reset opacity on disabled buttons
Merge branch 'master' into pr/12388

Conflicts:
	dist/css/bootstrap.min.css
grunt
its an email input
Merge pull request #12432 from ChrisRiddell/signin-email-fix

Wrong input css for signin example
fixed first element padding of list-inline
grunt
Bump versions, run grunt