CLONE - A teacher can override workshop grades

This test requires a workshop which has a number of submissions and assessments.

1. Login as a teacher and switch the workshop to the grading evaluation phase.
2. Follow the link for a student's submission and override the grade for submission.
3. Check that the overridden grade is displayed in the grade for submission column with a line through the original grade.
4. Follow the link for a student's received grade and override the grade for assessment.
5. Check that the overridden grade is displayed in the received grades column and the given grades column with a line through the original grade.