Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceFoundation  87d5cea0f270f07df756a82c8e2a26f19b94d973

Remove dupe message. It belongs to BlueSpiceExtensins/ResponsibleEditors

translatewiki.net script throws "Notice: Key
8:action-responsibleeditors-viewspecialpage already belongs to ext-bs,
conflict with ext-bs-responsibleeditors"

Change-Id: Id22c96e2b53915af6d711bdc8965475dad595fc5