Grader does not see exercise status enrollment from the index.yaml during grading #118

If the exercise status is set to "enrollment" by using the append_content variable in conf.py, then the grader code in the form feedback does not know that the exercise is for enrollment. The feedback contains the "correct/incorrect" lines that have been removed in enrollment exercises. In other words, the is_enrollment_exercise only sees the status defined in the exercise config.yaml and it is unaware of the exercise status in index.yaml. (Using append_content adds the status only in index.yaml.)

If the status "enrollment" is added in the questionnaire RST directive or manually in the exercise config.yaml, then it works.