Classes laid out like a course

What changed

• Class pages now have a course index on the left, breadcrumbs, and Course, Participants, Grades, and Activities tabs.
• The Grades tab lists every student against every assignment, with points and a course total. Participants lists the teacher and every student, with Enrol students and Remove.
• Teachers can preview an assignment as a student. Nothing a teacher does in a preview is saved, so it never adds a score.