Fix: Messages de maladies non publics

Les messages de maladies sont uniquement pour les "owners"
(ce qui inclut les MJs)

module/chat-utility.js

@@ -118,6 +118,10 @@ export class ChatUtility {
     return undefined;
   }
 
+  static getOwners(actor) {
+    return game.users.filter(it => actor.getUserLevel(it) == CONST.DOCUMENT_OWNERSHIP_LEVELS.OWNER)
+  }
+
   /* -------------------------------------------- */
   static getWhisperRecipientsAndGMs(...names) {
     let recipients = [...ChatMessage.getWhisperRecipients('GM')]