Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  a7fae2311477680f6f20b61c96dcd462233a846c

(bug 47496) Use (hidden) preference for copyright acknowledgment

Created hidden preference for copyright acknowledgment

Removed code added/refactored in https://gerrit.wikimedia.org/r/89859 as it breaks preferences here.

Change-Id: I61c5a155ac41c9b799095212d9b8243fc1bfbbca