Refs #16739
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Add Methods section to Popovers nav menu in docs

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Expand ISO in CSS codes for asterisk and plus

I'm using babel and webpack with less-loader to bundle all resources maybe this will cause this issue.

Per https://github.com/twbs/bootstrap/issues/16671#issuecomment-115161001
Refs #16689
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Add Wall of Browser Bugs entry for #15968

Closes #15968.
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Add Wall of Browser Bugs entry for #16671

Closes #16671
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Added *.min.map to "whats-included" sectons.

Re-order popover elements in docs

X-Ref #13969

Include CSS Source Map for bootstrap.min.css

- Update comment as recommended by @cvrebert
- Use `transparent` for `background-color` so we don't need to override that value again in the disabled state.
- Remove disabled changes.

/cc @wonsong

Removes border around <select> caret in IE10+

Clarify that <fieldset> only uses the disabled attribute

Adds @dl-horizontal-breakpoint

Fixed .input-group-addon border-radius

Fix hover border covering active in pagination

Fix #16646

Fix #16632

Add role="document" to modal dialog content

to include a note about `role="document"`

Initial fix to generalise use of modals. Generally, true role="dialog"
containers would require only forms/controls as content, with all other
text correctly and explicitly associated via
aria-labelledby/aria-describedby and similar...but as authors use modals
also as generic overlays, this extra role is required to get AT
(particularly NVDA) out of "forms" mode and reenable reading keys

Fix asymmetry between dropup and dropdown carets.

Add Slack link to `CONTRIBUTING.md`

Closes #16599 by merging a tweaked version of it.

X-Ref #16583