Fix bad email formatting #5578
Here's a sample updated email:
Your data has been processed and is ready for download by following this link.
The diaspora* email robot!
Making sure that the person who receives this email is able to log into the account concerned is not, in my opinion, a bad safety net, so I think it's good to make sure that the person trying to download these data is logged in (or can log in). I think they will get redirected automatically to the pod's sign-in page if they're not logged in when clicking the link in the email, and if so that would be fine.