Only enable `pause: hover` for non-touch browsers

Fixes #11967.
grunt
Add type to buttons in tooltip-viewport example
Fix anchor link
Merge pull request #14691 from Quy/master

Fix anchor link
Fixes #14687: Include video element in responsive embed
Fixes #14682: Remove quotes reset on blockquote elements as it causes rendering bugs
grunt
Chromium bug #337668 seems to have been fixed.
Added default collapsed class to the collapsed accordion examples in the docs
Added default collapsed class to the collapsed accordion html code example in the docs
Merge pull request #14709 from twbs/add-collapsed-default-class-to-accordion-toggle-example

Added default collapsed class to accordion
Chromium bug #282918 seems to have been fixed.
Chromium bug #329574 seems to have been fixed
Filed WebKit bug for #8350
grunt
Update grunt-contrib-jade version
Merge pull request #14715 from watilde/update/grunt-contrib-jade

Update grunt-contrib-jade@0.13.0
Fix #12563: Reiterate that empty tooltips+popovers do not get displayed
Merge pull request #14716 from blankmaker/docs/fix-12563

Fix #12563: Elaborate that popover('show') checks title/content