Add an option to download all session documents.
GLAARG VEC would like to get all docs, including the W5YI and Session Manifest. Since we provide a Google Drive folder for Session Owners to deliver their docs, we're not limited on size. For us, at least now, more is better. We'd like a one-click download option for our Session Owners that includes everything we can get. rather than having to have them remember and select multiple downloads and exports.