test: loosen URL check in e2e test

[mantariksh]

Problem

End-to-end tests are intermittently failing due to the following:

AssertionError: expected
      'http://localhost:5000/60c068423668141b03289c84#!/' to deeply equal
      'http://localhost:5000/#!/60c068423668141b03289c84'
      + expected - actual
      -http://localhost:5000/60c068423668141b03289c84#!/
      +http://localhost:5000/#!/60c068423668141b03289c84

This is probably because the test checks the URL in the browser before the browser redirects to the form.

Solution

Loosen the URL check so it checks for the presence of the form ID in the URL instead of an exact string. If the redirect does not occur correctly then the subsequent assertions will fail anyway.