Add tests of access and password reset views

I'd like to get this in now, as the JS underlying the tests continues to change. @AlasdairSwan, could you take a look? @wedaly, FYI.
Thanks for the tip. I'm working on bringing in the `AjaxHelpers` now, but since this is holding up @AlasdairSwan, I'd like to merge this in its current state and add use of `AjaxHelpers` separately. Is that okay with you?