Change value of stateful button after event loop

Fixes #14450
swap cursor not-allow for default, and use a variable for all disabled elements
Merge pull request #14457 from hnrch02/button-set-val-after-event-loop

Change value of stateful button after event loop
grunt
Handle `collapsed` class on triggers even when manually invoked

Fixes #13636.
Merge pull request #14686 from twbs/collapsed-class-manual-invocation

Handle `collapsed` class on triggers even when manually invoked
grunt
Independently delegate data-api selectors

Fixes #14462.
Closes #14463 by merging it.
grunt
Safari v8.0 still suffers from Justified Nav rendering bug
Merge pull request #14902 from twbs/safari-justified-nav

Safari v8.0 still suffers from Justified Nav rendering bug
Fix customizer download with Firefox.
Merge pull request #14903 from twbs/fix-#14750

Fix customizer download with Firefox.
Customizer: include the minified files only on GitHub pages.
Reverts #14848, the overflow scrolling in the docs sidebar /cc @hnrch02
Merge branch 'master' into cursor_var
change back to not allowed cursor
Merge pull request #14904 from twbs/customize-min-files

Customizer: include the minified files only on GitHub pages.
indentation and comment
Merge pull request #14891 from twbs/cursor_var

Add variable for default cursor