Server persistence of analyses

[ArtPoon]

How can a user return to an analysis on the server? For example, what if the user closes the browser window or tab associated with their Shiny analysis? There are generally two approaches to this problem that I can think of:

1. generate a random unique identifier that is used to label run folder, so that the user can bookmark that page and return to the same analysis later on (e.g., Datamonkey)
2. Implement a user account system like Django

[ArtPoon]

Another feature to consider is e-mail notification on completion of an analysis