Fix/Workaround file where we can't enter values in some fields
The problem was that the JS checker for the field format was using the willCommit property of event and we don't define it so the JS interpreter was going "ok nope, out of here" and the field didn't get edited.
I've read the willCommit definition in js_api_reference.pdf for almost 30 minutes, and even it's just 3 lines i don't think i understand it, but i think that returning true is "safer", i.e. says that this event is going to actually change the field, which as far as i can see it's what we always do