Create paths with polygons

We need to define paths for polygons in order to show user directions.

Here is an example https://stackoverflow.com/questions/2741808/custom-routes-paths-roads-on-google-maps

Start by reviewing the issue description and the linked Stack Overflow example for how polygon paths can represent user directions. Identify where the web app renders its map and how polygon data would be supplied; the work is done when polygon-defined paths visibly show directions to users.

Written by the indexing model from the issue text.