Problem: With a fresh Wikibase instance installed following the steps at https://www.mediawiki.org/wiki/Wikibase/Installation I see the name of some interface messages at the sitelinks section of an Item instead of their corresponding values in English. There's a default value for MediaWiki:Wikibase-sitelinks-wikipedia but there aren't default values for MediaWiki:Wikibase-sitelinks-wikiquote, MediaWiki:Wikibase-sitelinks-wikivoyage, MediaWiki:Wikibase-sitelinks-wikinews or MediaWiki:Wikibase-sitelinks-wikisource.

Screenshots/mockups:

Open questions:

• Is the problem in the installation process, maybe incomplete, or in the software?