OSIS-2777 : Add cdn plugin to CKEditor config
OSIS-2777 : Add cdn plugin to CKEditor config

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