Add encryption

src/scheduler/tasks/index.ts

@@ -1,7 +1,9 @@
 import checkExpiredBansTask from './check-expired-bans-task';
 import closeStaleTicketsTask from './close-stale-tickets-task';
+import pruneOldMessagesTask from './prune-old-messages-task';
 
 export default [
   closeStaleTicketsTask,
   checkExpiredBansTask,
+  pruneOldMessagesTask
 ];