These can be replaced by their `.text-xs-*` parallels.
This also avoids any complications from interactions between the responsive and non-responsive classes.
(e.g. `<div class="text-left text-md-right">`)

Refs #18300
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We can't include it in docs.min.js because docs.min.js includes application.js,
application.js depends on bootstrap.js,
and the tooltip portion of bootstrap.js depends on Tether.

So instead, we need to load Tether separately before bootstrap.js

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Admittedly wordy info dump on why we use `touch-action:manipulation`

refs https://github.com/twbs/bootstrap/pull/18051#issuecomment-156375970

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Refactoring according the comments on https://github.com/twbs/bootstrap/pull/18104.
Closes #18131

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Attribute order now adheres to the Code Guide
(http://codeguide.co/#html-attribute-order).

See http://trac.webkit.org/changeset/191954
Refs #15968

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Refs #17913
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Because of a color scheme has a color and background color.

Add http://wkbug.com/150715 to Wall of Browser Bugs

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Per http://caniuse.com/#feat=documenthead , document.head is supported in IE Mobile 10+,
so slightly simplify the JS accordingly.

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It's been fixed in WebKit Nightly!
See https://trac.webkit.org/changeset/191623 and http://wkbug.com/149366
Refs #17438, #14237

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Fix #18076

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See http://trac.webkit.org/changeset/191610
Refs #17913
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