FormWidget: Translated nested value set to property[subproperty]

[StevenLangbroek]

Useful for larger forms.

validSignup =
  user:
    firstname: 'John'
    lastname: 'Doe'
    email: '[email protected]'
  company:
    name: 'Mojotech'
    url: 'http://www.mojotech.com'

new FormWidget().submitWith(validSignup)