Apply @color argument to striped gradient

The @color argument is currently not being used for the striped gradient.
Remove progress bar striped @color parameters; use default transparent white.

* If the @color parameter is not removed, the stripes are the same color as the element background color. In this case, the stripes do not appear.
code.less: also set default monospace font for `<kbd>` and `<samp>`
Fixing carousel control positioning

The left control should be positioned from the left, while the right
control should be positioning from the right. Positioning both from the
left results in the right carousel control being incorrectly positioned
(most noticeable with a larger than normal font size).
Add missing methods (rotateX/Y, perspective(-origin) and transform-origin)

Added missing mixins:
rotateX
rotateY
perspective
perspective-origin
transform-origin
Deprecate container-{device} vars for container-{size} classes; updates customizer and grid to do the same
Make custom max-width on row conform to Boostrap convention

Bootstrap break point for tablet portrait 768 keeps the row intact, so it's not appropriate to have off-canvas elements at that width. Custom off-canvas.css should be breakpoint 767px
Prevent X-scroll on small screens

html overflow-x must be hidden to prevent accidental x-scroll on small screens. This is more apparent with touch screens, where the user often gestures diagonally instead of a true vertical gesture.
Fix #10324: Add opt-in note to tooltip docs

* Re-added a note (now callout) about need to opt in to tooltip docs
* Converted same note in popover section to callout
Merge branch 'master' into deprecate_screen_containers
fixes #10277: Mention removal of navbar vertical dividers in migration docs
fixes #10282: Cross reference tabs and tabs plugin
fixes alignment and nav list in offcanvas example
fixes #10111: different colors for dropdown link hover and active states
fixes #10115: Default carousel controls and Glyphicon controls should behave the same on small devices and up
Merge branch 'deprecate_screen_containers'
reverse vars for backwards compatibility /cc @cvrebert
minor improvements to affix docs
fixes #10164: Document .center-block mixin and update CSS to include it as a class as well
Fixed glyphicons count

Glyphicons are 200

refers to #9794