Perform functional tests on staging

Scenarios:

1. [PASSED] Login via existing account with verified e-mail
2. [PASSED] Login via existing account with not verified e-mail
3. [PASSED] Register via social account
4. [PASSED] Register via form with Gmial e-mail
5. [FIXED] Register via form with @redhat.com e-mail (ORG-3290)
6. [PASSED] Login when user is already logged in RHD with account which has verified e-mail
7. [PASSED] Login when user is already logged in RHD with account which has not verified e-mail

Expected behavior:

• User needs to be redirected back to forums after any action on Keyclaok (registration, login)
• In case of "not verified e-mail" user is asked to verify e-mail