Subscriptions with the same URL can now be added as long as the new subscription is named

backend/subscriptions.js

@@ -40,9 +40,9 @@ async function subscribe(sub, user_uid = null) {
         else
             url_exists = !!db.get('subscriptions').find({url: sub.url}).value();
 
-        if (url_exists) {
-            logger.info('Sub already exists');
-            result_obj.error = 'Subcription with URL ' + sub.url + ' already exists!';
+        if (!sub.name && url_exists) {
+            logger.error(`Sub with the same URL already exists -- please provide a custom name for this new subscription.`);
+            result_obj.error = 'Subcription with URL ' + sub.url + ' already exists! Custom name is required.';
             resolve(result_obj);
             return;
         }