Give session id or vars file or link to session in "View answer files" Dashboard tool if user chooses to share answers with admin

[ekressmiller]

Currently, if someone gives feedback and chooses to share answers with an administrator, a "Open Session" link is created on the browse feedback tool, which drops you into their session:

Being placed into the session does not necessarily give you a simple way to see their answers though, especially if you're on a production server with debug = False and answer sets disabled.

Would it be possible to also link to the vars file, or even just print the session id so we could cross reference with the "View answer files" tool?

Could be similar to how the "View answer files" tool has both Join and Vars options: