fix #12154
Fix #12025 and minify styles
fix #12007 by clarifying target of dropdown events
refactored and renamed grid mixins
fixed first element padding of list-inline
Fix issue causing .navbar-brand element height to be shorter than .navbar height
Downgrade holder.js to v2.2.0.

Fixes #12440.
Merge pull request #12463 from XhmikosR/12440

Downgrade holder.js to v2.2.0.
most of Bootstrap's components are pure CSS and thus don't require jQuery

Refs https://news.ycombinator.com/item?id=7156305
fix #12484
Use scss option instead of css for better highlighting
Merge pull request #12448 from PHLAK/master

Fix issue causing .navbar-brand element height to be shorter than .navbar height
grunt after last commits
Merge pull request #12480 from twbs/clarify-jquery-err-msg

Clarify JS error message about missing jQuery
rm callout about creating .container-fluid-alikes now that .container-fluid has been added
mv .img-responsive docs from Overview to Images section
Remove redundant :-moz-placeholder styles

No need for old Firefox versions support.
Don't re-set indent style for [*.py]

Just inherit it from [*].
Merge pull request #12503 from ZDroid/ed

Don't re-set indent style for [*.py]
Improve alignment of the dashboard placeholder images
Fixes #12435