Updated mail urls to use https
[AI-400] Switches map renderer to use new geo storage

We are slowly moving the administrative level geometry into
the database structure itself so it can be more easily queried/
searched.

Now the shaded polygon map will use this source now instead of
the flat files deployed to google storage
Fixed (some) broken tests
Fixes PolygonGeneratorTest

Adds handler for degenerate cases of empty input list to
the Jenks algorithm.