Updated migration

- Fixed bug in migration process for single-user mode
- Changed name of migration

Removed unused code for getmp3/mp4 and fixed bug when retrieving playlist if it didn't exist

Fixed bug in streaming code where playlist audio files would not play if the file path was not present

Fixed bug in getallsubscriptions for single user mode

backend/subscriptions.js

@@ -483,7 +483,7 @@ function getAllSubscriptions() {
             if (users[i]['subscriptions']) subscriptions = subscriptions.concat(users[i]['subscriptions']);
         }
     } else {
-        subscriptions = subscriptions_api.getSubscriptions();
+        subscriptions = getSubscriptions();
     }
     return subscriptions;
 }