Make backup configure owner only

src/routes/settings.js

@@ -1,8 +1,11 @@
 'use strict';
 
 exports = module.exports = {
-    set: set,
-    get: get
+    set,
+    get,
+
+    // owner only settings
+    setBackupConfig
 };
 
 var assert = require('assert'),
@@ -276,7 +279,6 @@ function set(req, res, next) {
 
     switch (req.params.setting) {
     case settings.DYNAMIC_DNS_KEY: return setDynamicDnsConfig(req, res, next);
-    case settings.BACKUP_CONFIG_KEY: return setBackupConfig(req, res, next);
     case settings.PLATFORM_CONFIG_KEY: return setPlatformConfig(req, res, next);
     case settings.EXTERNAL_LDAP_KEY: return setExternalLdapConfig(req, res, next);
     case settings.UNSTABLE_APPS_KEY: return setUnstableAppsConfig(req, res, next);