notifications: send backup fail only to owner

only superadmin has access to server and can adjust backup config

src/userdb.js

@@ -1,23 +1,23 @@
 'use strict';
 
 exports = module.exports = {
-    get: get,
-    getByUsername: getByUsername,
-    getByEmail: getByEmail,
-    getByAccessToken: getByAccessToken,
-    getByResetToken: getByResetToken,
-    getAllWithGroupIds: getAllWithGroupIds,
-    getAllWithGroupIdsPaged: getAllWithGroupIdsPaged,
-    getByRole: getByRole,
-    add: add,
-    del: del,
-    update: update,
-    count: count,
+    get,
+    getByUsername,
+    getByEmail,
+    getByAccessToken,
+    getByResetToken,
+    getAllWithGroupIds,
+    getAllWithGroupIdsPaged,
+    getByRole,
+    add,
+    del,
+    update,
+    count,
 
-    addAppPassword: addAppPassword,
-    getAppPasswords: getAppPasswords,
-    getAppPassword: getAppPassword,
-    delAppPassword: delAppPassword,
+    addAppPassword,
+    getAppPasswords,
+    getAppPassword,
+    delAppPassword,
 
     _clear: clear
 };