fixing notifications not being called when same adapter has been used…

… twice

lib/notification/notify.js

@@ -13,9 +13,12 @@ if (adapter.length === 0) {
 
 exports.send = (serviceName, newListings, notificationConfig, jobKey) => {
   //this is not being used in tests, therefore adapter are always set
-  return adapter
-    .filter((notificationAdapter) => {
-      return notificationConfig.find((config) => config.id === notificationAdapter.config.id);
-    })
+  return notificationConfig
+    .filter((notificationAdapter) => findAdapter(notificationAdapter) != null)
+    .map((notificationAdapter) => findAdapter(notificationAdapter))
     .map((a) => a.send({ serviceName, newListings, notificationConfig, jobKey }));
 };
+
+const findAdapter = (notificationAdapter) => {
+  return adapter.find((a) => a.config.id === notificationAdapter.id);
+};