urllink can parse as an array of tokens

 * fixes a crasher where the stringified array happen to meet the
   condition

 * an example of a page that now parsers with this fix,
     enwiki:User_talk:151.103.218.162
   particularly this link,
     (http://www.facebook.com/lonelybanshee<!-- matching the
     [[regex|regex rule]] \bfacebook\.com) -->)

 * adds a test case for links similar to the above

 * the new failing test case looks like an unrelated bug in how selser
   tests are generated or newline chars are added

Bug: 58355
Change-Id: Id8589c56eff2ff6d9fb332a7ae27d5df8515fa75