Optimize address lookup

[ut]

Currently the allocation of address details does not work precise. It no match is returned the message could be more verbose to give hint how to.improve the query

[ut]

Reverse lookup for the value "city" should be extended like this:

                        if (val.address.city) {
                            city = val.address.city;
                        } else if (val.address.town) {
                            city = val.address.town;
                        } else if (val.address.village) {
                            city = val.address.village;
                        } else if (val.address.municipality) {
                            city = val.address.municipality;
                        } else {
                            city = val.address.state;
                        }