Fix fallback to english labels if translation is missing
Fix fallback to english labels if translation is missing

As noticed in issue #130, translation fallback did not work if `lang`
was set to something that we do not have translations for.

Wikidata/SQID,Wikidata/SQID,Wikidata/SQID,Wikidata/SQID,Wikidata/WikidataClassBrowser,Wikidata/WikidataClassBrowser,Wikidata/SQID,Wikidata/SQID,Wikidata/WikidataClassBrowser,Wikidata/SQID