Last modified: 2013-03-13 16:25:09 UTC
The pop up message contains a Wikidata-specific copyright-notice which comes from the WikimediaMessages extension (key 'wikidata-shortcopyrightwarning'). This is hardcoded in the mw1.21-wmf10 branch in repo/incluedes/EntityView.php , which is absolutely horrible and I apologize for this. Before the wmf11 deployment, this needs to be fixed in EntityView by calling a hook which is implemented in WikimediaMessages and which replaces the message from Wikibase as it is with the wikidata-shortcopyrightwarning message. The hotfix for wmf10 is in here: https://gerrit.wikimedia.org/r/#/c/49694/ I surely hope it will not be backported to wmf11.
This was done for wmf11: https://gerrit.wikimedia.org/r/#/c/52406/