CLONE - A teacher can preview a quiz activity

This test requires a quiz containing at least 3 questions.

1. Login as a teacher and preview the quiz.
2. Try editing a question and save the changes.
3. Submit all and finish the preview.
4. Check that a review of the preview is displayed.
5. Preview the quiz again and check that the question changes are displayed correctly.
6. Try editing another question and save it as a new question.