Launch geolocation autocomplete when address field is cloned

When a field used as address_field is cloned, the autocomplete is started.
For the moment it need to also clone the map field and clone-group must be defined for both fields.
Could be better to only clone the coordinate field and add marker on the same map.
Merge pull request #435 from mderiano/master

Launch geolocation autocomplete when address field is cloned