* Fix docs horizontal scrollbar in Components > Modal
* Add overflow to docs example class
* Drop the handleUpdate() variant
While I understand the variant covers the "get a particular plugin instance" case from http://getbootstrap.com/docs/4.0/getting-started/javascript/#programmatic-api it seems weird that we do it here but not everywhere else in the docs (randomly checking other pages, we seem to stick to the documented methods as written on those pages). As this isn't properly explained as is, and as it adds nothing (more of a preference for authors), it would be easier to just drop the variant and stick with the documented method as outlined later on in the same page (avoids having to go off on a "why should you use this instead of that" tangent here).
* Add support for size attribute on custom selects
* Add large custom select, document it and the small variant
* fix custom select focus state
* fix custom file input focus styles
* remove empty line
* Rewrite custom form check backgrounds
Previously, this was all just a background-color and background-image. When we restored the gradients though, we had two background-images competing on the same element, causing rendering glitches. This refactors that code, creating a mixin to simplify things, so we can we easily use two background-images (SVG icon and gradient) when -gradients is set to true.
Fixes#24598
* restore default vars
* Revamp custom check and radio backgrounds
Instead of applying multiple background-image's to the same element, we're adding a new ::before pseudo-element to layer the background-images. Gradients go on the .custom-control-indicator while their icons go on the ::before element. This allows us to shave some bytes from when we compile and we previously needed to redeclare the background-image for the icon if you changed the gradient.
* remove now unused mixin
* mention change in migration docs
* Change breakpoint max- calculation to fractional values
* Update docs to reflect fractional max-width breakpoint values
* Add fractional max-width to offcanvas example
* Add documentation and SCSS comment for fractional viewport support
* use descriptive docs btn naming
* rename `btn-bd-yellow` to `btn-bd-download`
* sort state vars
* sort state vars
* info, warning, danger
* rename btn-bd-purple
* rename `.btn-bd-purple` to `.btn-bd-primary`
* align docs color variables
* generate $bd-purple-light color
* with http://razorltd.github.io/sasscolourfunctioncalculator/
* allow overide of docs variables
* Add .modal-dialog-centered for optional vertically cenetered modal
Fixes#23638
* adds modal-dialog-centered class to docs and removes margin to avoid generating a vertical scrolling
* mention limitations
* fix aria attr
* Add `width: 100%` to the .modal-content for the centered version. Adding it here to avoid adding another selector by limiting it to the centered modal modifier.
- Drops the Team page for privacy and accuracy. I don't want to pressure folks into feeling committed to the project through a page like this, and it also doesn't allow folks any privacy option (as you can hide org membership on your GitHub profile).
- Moves the History page into an Overview page, which includes an updated history page and a quick team blurb at the top.
- Added redirects to the new Overview page from Team and History
