CLONE - Forum expect completed dates display correctly in the Timeline block

This test requires a course with a teacher and student enrolled and completion tracking enabled.

1. Log in as the teacher, create a forum and set Expect completed on to tomorrow's date.
2. Log in as the student and verify that the Timeline block on the Dashboard displays the forum with the expected completion date of tomorrow.
3. Log in as the teacher, edit the forum and change the date to next week.
4. Log in as the student and verify that the date has changed.
5. Log in as the teacher, edit the forum and remove the expected completion date criterion.
6. Log in as the student and verify the forum no longer appears in the Timeline block.