Refactor RssFeedManager to use new model when closing feeds, fix close series feed when series is removed, update RssFeedManager to singleton

server/controllers/CollectionController.js

@@ -4,6 +4,7 @@ const Logger = require('../Logger')
 const SocketAuthority = require('../SocketAuthority')
 const Database = require('../Database')
 
+const RssFeedManager = require('../managers/RssFeedManager')
 const Collection = require('../objects/Collection')
 
 /**
@@ -148,6 +149,8 @@ class CollectionController {
   /**
    * DELETE: /api/collections/:id
    *
+   * @this {import('../routers/ApiRouter')}
+   *
    * @param {RequestWithUser} req
    * @param {Response} res
    */
@@ -155,7 +158,7 @@ class CollectionController {
     const jsonExpanded = await req.collection.getOldJsonExpanded()
 
     // Close rss feed - remove from db and emit socket event
-    await this.rssFeedManager.closeFeedForEntityId(req.collection.id)
+    await RssFeedManager.closeFeedForEntityId(req.collection.id)
 
     await req.collection.destroy()