People import fails for countries with commas

We split the "location" field in the people.json file on the commas to find the country as the last element of this array. The problem is that some of the countries in our database have commas in them, such as "Moldova, Republic of", so there's no way for anyone to find a match with this country. We have a person who has put `"location": "Chisinau, Moldova"` and another who has `"location": "Chisinau, Republic of Moldova"` so we need to find a way to work with these entries. There are other countries too that will run into this problem.