CONTRIB-4298 fix Moodle 2.4 compatibility regression
Merge branch 'master' into 01-checkmark_detail_info
1. Revert "Correct mistake with student view errors"
This reverts commit 0ce353326abad49a1cdbe5e9f365a8aff9ba842e.
2. Correct mistake with student view errors in different way

Signed-off-by: semteacher <semteacher@gmail.com>
Update previous commit:
1. change access capabilities (hope)
2. comments, etc.

Signed-off-by: semteacher <semteacher@gmail.com>