Add support for form fields

[jopdeklein]

Not sure if it's really useful since it is user input, but perhaps it could help exercising forms for non-English languages during development.

[tryggvigy]

Hey! By form fields I'm assuming you mean inputs, textareas and such?

[jopdeklein]

Correct, they look quite funny next to all the pseudo localized text. It's mostly useful for placeholder values or inputs with default values (or with a maxlength, maybe?)