am 71b28a60: Merge "docs: add check in hash-change callback to be sure we\'re only dealing with hash-tags that are search queries. bug: 6843654" into jb-dev

* commit '71b28a600e52922a7a18b990f256b2fa104d32e8':
  docs: add check in hash-change callback to be sure we're only dealing with hash-tags that are search queries. bug: 6843654