PURPOSE
Before this commit when confirming a registration on the frontend the form
was directly sent to the controller and the user was redirected on the
success page if no errors.
After this commit an ajax call is made after validating the form and the
success page is directly loaded from the response... there is no redirect
anymore.
This way of displaying the success page prevent using the link generated
before by another user and getting private information about the booth's
renter.
Two more advantages are that it's easier to maintain and it's slightly
faster than before since the whole page isn't reloaded.
LINKS
Task-2635461
PR : odoo/odoo#77081
Patrick Hoste
2fab359e32