Lint docs-assets/js/application.js and docs-assets/js/customizer.js.

Conflicts:
	dist/css/bootstrap.min.css

add vertical-align back to where it's necessary since we reset from block to inline-block on several inputs

Updated .scale() mixin so that it accepts optional vertical scale factor...

Conflicts:
	dist/css/bootstrap.css
	dist/css/bootstrap.min.css

Fixed some errors in the docs javascript.html

/cc #10711 #9862

Conflicts:
	dist/css/bootstrap.min.css
	dist/js/bootstrap.min.js
	docs-assets/js/raw-files.js

* Adds nav link to sidebar for contextual classes
* Refactors to use prefixed classes, like .list-group-item-info, instead of chained classes
* Adds default and linked variations to example in docs

Added text-justify class to type.less

Fixes #11766: Use color var for background on badges in buttons to restore proper background to default button badge

Darken navbar toggle icon bar to meet WCAG

Links are dead now since Google blacklisted the group for massive spam,
which they could be of no help in resolving. We’ll have a new official
forum for discussions soon folks <3.

Load minified Bootstrap JS code

add JavaScript Code Style checker integration