the javascript contorl panel throws a few errors: "Control is no longer supported in the Google Maps Javascript API v2. Please visit https://developers.google.com/maps/documentation/javascript/v2/v2tov3 to migrate your application to v3.
Map.addControl is no longer...
ScaleControl is no longer ...
"Warning: Version 2 of the Google Maps JavaScript API is no longer available. Please follow the guide to migrate your code to version 3 of the Google Maps JavaScript API. As of November 19, 2013, all applications requesting v2 are served a special, wrapped version of the v3 API instead. We expect this wrapped version of the API to work for most simple maps, but we strongly encourage you to migrate to the v3 API immediately."
yes, you are right. This is the old version.
You can browse the wikipedia layer with the new layout selecing 'wikipedia' and deselecting the geonames layer.
I have put it on the todo list to update the wikipedia.html page to use the new layout.