Default to using the comments server in localhost.

  # We check explicitly for IE version to make sure the code works the

  # same way in both real IE7 and IE7-mode of IE8/9.

  def add_comments(db_name, version)

    comments_base_url = "http://projects.sencha.com/auth"

    comments_base_url = "http://localhost:3000/auth"

    @options += ["--head-html", <<-EOHTML]

      <script type="text/javascript">

        Docs.enableComments = ("withCredentials" in new XMLHttpRequest()) || (Ext.ieVersion >= 8);