Add support for one alternate domain which redirects

src/js/client.js

@@ -396,10 +396,11 @@ angular.module('Application').service('Client', ['$http', '$interval', 'md5', 'N
             memoryLimit: config.memoryLimit,
             xFrameOptions: config.xFrameOptions,
             robotsTxt: config.robotsTxt || null,
-            enableBackup: config.enableBackup
+            enableBackup: config.enableBackup,
         };
 
         if ('mailboxName' in config) data.mailboxName = config.mailboxName;
+        if ('alternateDomains' in config) data.alternateDomains = config.alternateDomains;
 
         post('/api/v1/apps/' + id + '/configure', data).success(function (data, status) {
             if (status !== 202) return callback(new ClientError(status, data));