Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceFoundation  f4dc9c61cc58ca0001f252d53ca09ef8b86849d8

Improvements: Config/ArticleHelper/CacheHelper

* Fixed notice
* Added desc
* Used BsCacheHelper instead of wfGetCache

Change-Id: I5d1fd6724a3127d54a48738a32cf20e19874ead0