Rework the bank's experience of the Partner Profile to match the partners'

[cielf]

Summary

Make the bank's experience of the Partner Profile analagous to the partners'

Why

Having the similar experience will be better for bank/partner communication. Also, it's just as big and scary a form for the banks who fill it in on the partners' behalf.

Details

This is a followon request to complete the work started with issue 4504

• keep this change behind the partner_step_form for now -- we will be launching it together with the partners' changes
• refer to pull request [#4504] Add step-wise partner profile edit form #4766
• accordion-style with 'save progress' and 'save and review' buttons like the partners' edit profile.

Criteria for completion

• changes made to bank's edit of partner profile
• tests to support that.

[danielabar]

@cielf Just want to confirm that I'm targeting the correct view:

When I login as an org admin and select from left nav: Partner Agencies -> All Partners, and then click on any Partner name, it navigates to, for example http://localhost:3000/partners/8

Clicking the Edit Information button navigates to http://localhost:3000/partners/8/edit - this is the view to be modified into accordion sections right?