Update Bok Choy tests

@AlasdairSwan this updates the Bok Choy tests on your logistration branch.

One of the tests is still failing, but the failure is expected. The test checks that an error message is displayed when a user requests a password reset by providing an email address not associated with an active user. When I do this on your branch, I'm taken to the login form as if my request succeeded, when in reality no password reset email was sent. Formerly, the user was shown an error message contained in the server's 400 response: "No active user with the provided email address exists." The failing test will pass once this behavior is corrected.