[#66,city][m]: pulling in city data from city spreadsheet (unpacked sheet)

* This is much easier as city data in unpacked is now same structure as country data (thanks to work this morning)
[#66,city][l]: city now running primarily off backend similar to country.

* city data load and cleanup (plus testing)
* refactor summary table into a snippets file to be used by both country and city
* front city.js is now just 8 lines!