Show list of countries when adding address

When an address is added to a contact, the country field is a free text field. I would expect a combobox with all known countries in it.

A further enhancement would be to select the device owner's current country by default, because chances are I am adding an address that is located in the country I am in at the moment.

By making it easier to add the country to an address the addresses are more likely to be complete. Without this enhancement users are likely to leave out the country for contacts in their own country. If these addresses are at some point integrated with mapping apps such as uNav, having the complete address helps in finding the correct location.