Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceExtensions  16b9b611bba58aa2a4fd99c6720e3d9a9853cd5a

Preferences Cleanup

fixed specialpagename for wikiadmin
fixed i18n keys for wikiadmin specialpage
reduced code in preferences
Change-Id: Id6fc151762d56de64f1e18d97e357d0109dd1d26