variable way to set @caret-width-base
silence validator regarding http-equiv="X-UA-Compatible"
rm dummy 'src' attributes of <img>s & squelch validator warning; fixes #11216
goofed on 1 dummy <img> src attribute; thanks @extesy
doc that uncollapsing mobile navbar requires JS; per #10506
fix WebKit caps in comments
remove ref to nonexistent branch
fix misspelling in comment
fix misspelling in comment
add missing space before open curly brace
Kick up grunt-contrib-jshint dependency
Merge pull request #11234 from ZDroid/patch-2

Kick up grunt-contrib-jshint dependency
QUnit.equals() is deprecated; use QUnit.equal() instead
Merge pull request #11239 from twbs/qunit-equals-deprecated

QUnit.equals() is deprecated; use QUnit.equal() instead
Merge pull request #11224 from twbs/10506-doc

Document that uncollapsing the mobile navbar requires JS
Add another newline to improve final code readability

This divides banner from code.
Merge pull request #11222 from ZDroid/patch-1

Add another newline to improve final code readability
Remove multiple navbar z-index callout

* Since we removed the z-index of our default navbars in 76baacf2c94bec03273639ef0ed966dad87cf37a, we no longer need this warning.
* A quick test of the new code showed no problems with dropdowns falling behind a sibling navbar, so folks should be good to go.
Add .animation() mixin
Merge pull request #11244 from ZDroid/animation

Add .animation() mixin