Update venue country name for Countries 4.2
Update venue country name for Countries 4.2

Resolves:

    DEPRECATION WARNING: The Country#name method has been deprecated.
    Please use Country#iso_short_name instead or refer to the README
    file for more information on this change.

Details: https://github.com/countries/countries/blob/v4.2.2/README.markdown#upgrading-to-42-and-5x

openSUSE/osem,SeaGL/osem,SeaGL/osem,openSUSE/osem,SeaGL/osem,AndrewKvalheim/osem,openSUSE/osem,AndrewKvalheim/osem,AndrewKvalheim/osem