### Tasks
- [x] [ ] Billable product: Users must go through the registration form
- [x] [ ] What do we do with the tip.itis.swiss users that didn't go through the regsitration form? Expose this data and force fill it up?
- [x] go through the payment process and make sure it's TIP related not s4l
- [x] Add by hand current users in users_pre-registartion table with correct country @pcrespov