joomla/joomla-cms — pull request #2393 by Bakual (2013-11-02 20:59:57+00:00)
Title: Bootstrap CSS styles loaded from (media/JUI/) for logged in users on front-end.

The layout file used for the module frontend edit is loading Bootstrap CSS files using `JHtml::_('bootstrap.loadCss');`

This command should never be used in an extension as it WILL break templates, even Protostar.