Notify User when profile migration has finished

[tclaus]

A migration can take a bit of time. In the meantime a user can still 'work' on the pod. A notification should be send to inform that the migration of a) profile and b) photos are finished.

This can be done by mail, by a notification or something else.

[goobertron]

I started a ticket for this, not noticing that you had already done so. Here's the text I wrote, and I'll close my ticket.

When a migration is completed, no notification is sent to the user to tell them this. It would be useful to send a confirmation message:

• via the in-app notifications system.
• via email, if the user has entered a valid email address.

[Flaburgan]

There is already an email sent once the export is over. I guess we should do the same for the import?