Currently, `$toast-border-radius` uses the value of `.25rem`. This is inconsistent with other variables such as `$btn-border-radius` and `$input-border-radius`, which uses the "global" `$border-radius` variable.

* Fix buttons :focus state styles

Buttons :hover and :focus state shares styles.
Buttons :focus text color on 'a.btn' is now consistent with others '.btn'.

* `:focus` styles should be in sync with `.focus`.

So shared styles with hover were copy to focus definition. Rather then using
`hover-focus` mixin which do not contain `.focus`.

We use only `https` for a few months now.

Check prefers-reduced-motion variable before adding reduced motion media query for animated progress bars (#28530)

We don't need the extra bloat of gtag.

This reverts commit 089e3334.

This reverts commit 5e068eed.

This reverts commit 25bba7bd.

This reverts commit 1da5b9f7.

This reverts commit 9fda96e1.

Add back ruby/bundler folders so that they don't show up when we switch branches.

This can be removed when v4 hits EOL, along with the old Jekyll docs dist folder.

- Deletes mixin mentions from float docs
- Deletes mixin mention from visibility docs
- Deletes the image-replacement page for text-hide

- Drop hover and focus states
- Drop .badge-* variants and associated mixin for .bg-* utilities
- Drop .badge-pill for .rounded-pill utliity and adjust horizontal padding to find middle ground of .badge and old .badge-pill
- Remove unused variables
- Add default color value to .badge base class
- Update docs to reflect changes