Comparing Country, Region and City data

[Stephen-Gates]

As a contributor to an open data initiative (at a country, region or city level), I'd like to explore and compare how other initiatives are progressing within my country, regardless of their level so that,

• I can reach out and learn from initiatives that are doing better.
• I can compare relative progress over time.

As datasets will not be the same at country, region, and city levels, possible implementations may include:

• 3 tables on the same page showing country, region and city results.
• 3 maps on the same page showing country, region and city results (map scale may be an issue).
• A drill down from country to region to city.

This change could be considered as part of #82, Making code more generic for use with city censuses.