Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceFoundation  0a8b6a23dd68381d6d0369c6f7c918dcf1773240

Fixed some styling issues with ExtJS windows

This fixes issues in the new PermissionManager where images would be cut
at the bottom and text would be black instead of white.

Change-Id: I7a2a9ca5d097c31685fabd7408c034a090d748c7