Initializing form validation twice cause onSuccess to fire 4 times

[kevinresol]

https://jsfiddle.net/Lehyvemg/

Open debug console and click "Submit" in the form.
It can be seen that onSuccess is fired 4 times, if the form is initialized twice.

I need to re-init the form because I will add fields dynamically. (ref #910)

[jlukic]

Sorry about that, that was a terrible terrible oversight when refactoring settings.