Change the url for the new Google maps style; fixes #195

fixes #195, as per the URL structure  now used by the new Google Maps style. Note: The only part I'm not sure about is line 13, for IE and TinyMCE. Also, matching for www. on line 57: I suppose it's possible that a user could input the URL without the www, but google maps itself always redirects to the www. subdomain, so if one were to copy the URL from the address bar you'll always have the www.