Form submission steps

Upstreamed from IXA
A test for submitting the form
A test for the submit form by action test
Change form submit step to 'with action'. Add 'with id'
Test the "with id" step
Add nose to requirements

Fixes #3
Merge pull request #33 from infoxchange/form-submission

Form submission steps
Merge pull request #34 from infoxchange/add-nose-to-requirements

Add nose to requirements