Provide more extensive GEO Grouping options

[#1]

e.g if I want to define European maket segment I need to add each individual country which is tedious

[#2]

Allowing SAINT uploads on the default Country variable would be great. Otherwise we need to eat up another variable for this.

[#3]

Great suggestion. Tim, would you agree with Dan that this is best achieved simply by making Country a SAINT-classifiable field?