Updated mediawiki/extensions
Project: mediawiki/extensions/GWToolset  e2f024170c4cebe597ea84ed357d273c62e40e7b

Improve duplicate and other contributors messages

Added an initial statement to each message that should make it easier to
understand and identify the issue; especially when posted to Special:Log

Change-Id: I14da785a2bc7eb297cf16583292cdca97238915d