Get rid of the "<IdP> makes this easy!" screen

* Cleanup of the verify_primary_user module to remove global state.
* Add module.js->importFrom
* update the Selenium for the removal of the '<IdP> makes this easygit add .' screen

fixes #3671
Merge pull request #3680 from mozilla/issue_3671_remove_makes_it_easy

Issue 3671 remove makes it easy