Fixes #13478, reverts #10941
Merge branch 'master' into icon_paths

Conflicts:
	dist/css/bootstrap-rtl.css
	dist/css/bootstrap.css.map
	dist/js/bootstrap.min.js
	docs/dist/css/bootstrap.css.map
	docs/dist/js/bootstrap.min.js
Merge branch 'master' into icon_paths

Conflicts:
	dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.css.map
Merge branch 'master' into icon_paths
Applied translate3d to modal, navbar-fixed and affix to combat browser repaint
Merge branch 'master' into icon_paths

Conflicts:
	dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.css.map
Fix bug where a panel recieve extra top border

https://github.com/twbs/bootstrap/issues/13734

A panel placed inside of a collapsible panel recieve extra top border.

This commit reduces the effect of a selector to apply a border only to
the collapsible panel body itself, not to any panel placed within it.
Resolves Issue #13689

Doing this the right way this time. Hiding .panel-footer top border when
preceeded by a .list-group. This should resolve the "double border"
issue.
replace SemVer summary with a link to its website; fixes #13650

[skip validator] [skip sauce]
set not-allowed cursor on disabled radio+checkbox labels; fixes #13281

[skip validator] [skip sauce]
add docs for #13745

Good catch @juthilo
[skip sauce]
add failing test for #13268
put the tooltips into the DOM in the tooltip unit tests
don't show tooltips/popovers whose element isn't in the DOM; fixes #13268
Merge pull request #13752 from twbs/fix-13268

Proposed fix for #13268
there is no need for this.offsets and this.targets to be jQuery objects
no need to check for href attribute on the scrollable element
removing this.$element as it is a superfluous copy of this.$scrollElement
refactor scrollspy refresh method

Closes #13702 by merging a rebased version of it.
Merge branch 'mikegreiling-scrollspy-update'