Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceExtensions  ff4e64b025caf7bfc3dbe66aeab5139347a4d443

BS223: compatibility to vector skin

* added statebar + widgetbar to vector
* moved some styling + js from bs skin to extension
* widgetbar not visible atm

Change-Id: Ib1f5d6aed144cd8c0d0bd5a211de386b97202c7c