OSIS-4651 comment get_context PermissionFieldMixin
OSIS-4651 comment get_context PermissionFieldMixin

uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain