Add ajax validation mode for form component

[PubliAlex]

Hello,

I'm working with the shopaholic ecosystem. Very good until now except the bad surprise to see that the ajax form validation system completly bypass october way of doing form validation, preventing the use of extra features like inline form validation using <div data-validate-for="my_field"></div> or other very useful features.

In addition, your actual validation system only return the first field that throw an error whereas ValidationException allow to return an array of fields, with an array of messages allowing to do something like that when you submit an empty form with several required fields

To conclude, I think you should provide a new mode when dealing with form component "ajax with validation" that would handle errors the october way. Like that, people that want to use that mode can do it.

Best regards