WebKit CSS3 carousel transforms for supported devices
Utilised mixins rather than specific WebKit properties
Removed unnecessary percentage sign for 3D translation
Improved mixin ability with nested media query
replace js scrollspy test for default behavior
Add aria-haspopup and aria-expanded attributes to dropdown plugin

1. Add aria-haspopup="true" and aria-expanded="false" to dropdown docs
2. Toggle aria-expanded between "true" and "false" when opening and closing dropdown

Satisfy item 1 from https://github.com/paypal/bootstrap-accessibility-plugin#dropdown. See #13553.
add "focus" to focused btns with button plugin
Allow tabs to fade in if no initially active pane is present; fixes #13814
Add a few more cases to the visual test tab page
Use mousedown instead of click for backdrop click detection; fixes #13816
Only close modal if escape was hit with keydown; fixes #13929
possible fix for #14013
Add collapsed default class to navbar-toggle
Add touch-action: manipulate to buttons
Mark the `remote` option of the Modal plugin as deprecated.

Follow-up to https://github.com/twbs/bootstrap/issues/13087#issuecomment-46563760
Closes #13087 as WONTFIX.
Closes #13597 as WONTFIX.
modal docs formatting tweak

[skip sauce]
use non-minified Bootstrap CSS on non-gh-pages
use non-minified BS Theme CSS on non-gh-pages
use non-minified docs CSS on non-gh-pages
use non-minified docs JS on non-gh-pages