re-enable wikibase badges css setting

adds mapping of badge css classes to Wikidata badge items,
to display featured and good article badges in the clients.

This reverts commit b2121a9d6eb57d4e5cffcd59f702becda25864f0.

Change-Id: Icab0e87780c6dc537fc082060dd4bdb6f6a6ccf4
Merge "re-enable wikibase badges css setting"