The article URLs are generated incorrectly, e.g. derived from page titles with spaces appearing as %20 instead of the official URLs. This causes:
* Delay from appserver due to likely CDN cache miss.
* Possibly a 404 Not Found on non-English wikis due to incorrect encoding.
* Possibly stale content due to being a non-canonical URL and thus missing purges.
* Full extra network roundtrip due to redirect.
These originate from the the query to the geosearch API
https://en.wikipedia.org/w/api.php?action=query&format=json&origin=*&formatversion=2&prop=coordinates|pageprops|pageimages|description&colimit=max&generator=geosearch&ggsradius=10000&ggsnamespace=0&ggslimit=50&redirects=no&uselang=en&ppprop=displaytitle&piprop=thumbnail&pithumbsize=150&pilimit=50&codistancefrompoint=37.78347840548435|-122.468480578051&ggscoord=37.78347840548435|-122.468480578051
The existing Nearby calls `mw.util.getUrl( title )` on the title to get the correct URL. We should do that too.