QA: New browser test for "Nearby" page

1) Separate test for "non-mobile" Nearby page will be implemented in browsertests repo.
2) Per reviewer comment, made the follwing changes:
   a) Test should now work on "localhost", assuming Special:Nearby page works.
   b) Removed those \r characters that managed to sneak into the env.rb file.

Bug: 57333
Change-Id: If7a0d4e873fcecbe12a972a7b9e21a8d1b35c9be
Merge "QA: New browser test for "Nearby" page"