[Grok-doc] form tutorial needs z3c.widget which needs unpublished z3c.javascript

[Martijn Faassen]

Hi there,

I think it would be possible to rewrite the tutorial to less pretty
but working out-of-the-box widget. We'd lose a bit of tutorial content
as .custom_widget isn't demonstrated, so perhaps we can find another
widget library to replace z3c.widget. I think thanks to
z3c.autoinclude we could also reduce some of the stuff talking about
ZCML.

Regards,

Martijn