If an existing devfile is used, don't show the card with the recommended devfile

[datho7561]

This is the page after the page that informs there is an existing devfile that will be used. I assume that the devfile item being shown is the recommended one from the previous page ? This might be a bit confusing given that when a devfile exists, it's ignored.

Originally posted by @rgrunber in #3104 (comment)