Add a wet-ink-signature option

[nonprofittechy]

Right now, the only option appears to be to sign by drawing an image of the signature. I think we probably should let people choose to sign with a /s/, and possibly to sign with wet ink (if they don't choose to e-file).

[samglover]

Could this be an upstream bug? The interview does not assign a value to al_form_requires_digital_signature, which I assume would leave it as false. But I tried explicitly adding al_form_requires_digital_signature = False to a code block and it still didn't give me the option to sign after printing. (docs)

[samglover]

@nonprofittechy I know you've been working on this upstream. Is it still something we need to think about separately for this interview?

[nonprofittechy]

I don't think it's a bug upstream as this is working in other interviews, but we could look at it together.

But we need to add the /s/ option upstream if we want it.

[samglover]

So the solution is to make sure we give someone the option to download the form to sign and file manually.