Fix Form scroll to top when showing success
Fix Form scroll to top when showing success

We need to use the parent .kwcForm element for measuring as the header component is hidden.
Additionally add an offset of 150 so the success text isn't at the top edge (and might be hidden by a fixed header in some cases)

kaufmo/koala-framework,kaufmo/koala-framework,kaufmo/koala-framework,koala-framework/koala-framework,koala-framework/koala-framework