Updated Google Maps

[GregS]

I've just uploaded a set of changes moving Zuluru from Google Maps API version 2 to version 3. The new API is more mobile-friendly, and the new Zuluru implementation is more multiple-field friendly. (You can now click around on different field markers and be shown the details for that field, and administrators will appreciate that you can now edit multiple fields at the same time.)

As always, if you see anything that's not quite right, let me know!