Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceExtensions  0e98980883126996c13755cbdcf6ba294b2ee685

Fix for undefined index error on a fresh installation

When installing a new MediaWiki with BlueSpice, there is no user in the
authors' list, as the MediaWiki Default user is on a blacklist here. This
lead to an undefined index, which is now fixed.

Change-Id: Ia4a9108e1116e284aeeebe9142fd936b9a97795d