Serve public list of archived files

[gordonje]

To make it easier for reporters and editors to find, reference and download the data files we are archiving, let's create a simple web page that lists each of the .csv files we've archived, along with a download link.

It might also be helpful to list each version of each csv file so that folks can rewind to previous versions of the data.

A couple of routes we discussed:

• Serving static content via the same AWS S3 bucket where we are writing the data files; or
• Serving via GitHub pages, which would entail writing the .html file to this project's remote repo.

Either approach would prob work as part of a continuous deployment process so that we can update the page whenever we push code to the main branch.

[gordonje]

To get all of the files in the S3 bucket, call .list_objects_v2() with the bucket name.

To get all of the versions of each file, call .list_object_versions() with the bucket name and key.