Fix xss in url comment #967
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Motivation
Correction faille XSS sur le formulaire d'ajout d'URL dans un commentaire
Changes
Validation de l'URL avec une expression régulière
Liste blanche des protocoles d'URL autorisés
A faire
Gestion du CSP au niveau de l'app :
Nextjs handle (app.ts server) nonce -> rajouter l'id sur les script
CSP nonce id (cf mozilla developper)