use permissions to check if one can edit or relp

lms/djangoapps/django_comment_client/base/views.py

lms/djangoapps/django_comment_client/forum/views.py

lms/djangoapps/django_comment_client/permissions.py

lms/djangoapps/django_comment_client/utils.py

lms/envs/common.py

lms/static/coffee/src/discussion/content.coffee