Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  c2143f1ab55f84b70291c1aad96ce78e5c210b60

Run unit tests on travis in both English and German

This is more useful for debugging. The old client/repo
switch was non functional anyway.

Change-Id: Ibc70147e10d0645cdf933a4c40297dd9cabdb5fd