Redesign SURFconext screens in eduID app flows

[phavekes]

This issue is imported from pivotal

It feels very odd to be sent to a different environment on the very first click in the eduID app -> this is the case if you choose sign-in in the app on first login. 

All actions are handled by SURF, so the user is not interacting with a different organisation (if it was another org, it would be more reasonable to show).

Need explore options to redesign the flows in collaboration with SURFconext. See if this can be handled 'under water' and replace with nicer/more informative app UI.