National level map

[dominicwhite]

The current dashboard only shows data for DC. It would be nice to show data for every tract/block group in the USA. However, because of the size of that dataset, this may require incrementally fetching the data from a server as the user moves to different parts of the map, rather than statically loading the entire dataset when the page is first loaded.

• Adapt pipeline to download data for entire USA.

• Adapt Shiny dashboard to incrementally load data from server.