Extract $label-pill-padding-x variable

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Extract $label-padding-{x,y} variables

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Extract $modal-content-border-width variable

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Extract $modal-{header,footer}-border-width variables

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Extract $modal-dialog-sm-up-margin-y variable

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Extract new $modal-dialog-margin variable

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Fix docs for new naming of .btn-outline
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This one was overlooked at edit

See #17719 and #19199

Add extra styles for focused/hovered active outline buttons

v4: Validation states on custom forms

v4: Cleanup after drop csscomb

Remove http://bugzil.la/1060131 from Wall of Browser Bugs

http://bugzil.la/1060131 has been fixed by http://bugzil.la/823483 which should land in Firefox 46.
Refs #14320
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Remove http://bugzil.la/975632 from Wall of Browser Bugs

http://bugzil.la/975632 has been fixed by http://bugzil.la/823483 which should land in Firefox 46.
Refs #10690
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Make translation of custom file input text easier

v4: Translucent .form-control borders

v4: Avoid shorthand border-radius for list groups in cards

v4: Simpler modal footer buttons

fixes #18940: use specific border properties when changing the corners of list groups in cards to avoid overriding combo first-/last-child items

bundle update

Alternate fix to #17965: Updates to use the new class name and adds some basic docs for custom checkbox/radio validation