Cancelling registration in too large view in registration form

[Jaakkonen]

Currently the "cancel registration" with its warning info takes 1/3 of normal registration form and is in the same font as the other text. The big red "cancel registration" button is also larger than the "submit" making it look like the primary action in the form flow.

Make the cancellation be a pop-up that is opened from a grey-ish text and have that pop-up have the scary warning texts.