Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceExtensions  a133df3844b9d7595b222fdccb1b294a7661c117

BS223: Compatibility with vector

* wikiadmin + usersidebar added to leftnavigation
* authors + shoutbox + readers added to dataaftercontent
* mvoed some styling from skin to shoutbox
* statebar icon for shoutbox now refreshes when new shout is made

Change-Id: Ib3b1830986c2b43b757c477d9dd8fc2b344825a0