adding localhost as default for email server

src/user.js

@@ -3,7 +3,7 @@ var utils = require('./../public/src/utils.js'),
 	crypto = require('crypto'),
 	emailjs = require('emailjs'),
 	meta = require('./meta.js'),
-	emailjsServer = emailjs.server.connect(meta.config.mailer),
+	emailjsServer = emailjs.server.connect(meta.config.mailer || '127.0.0.1'),
 	bcrypt = require('bcrypt'),
 	notifications = require('./notifications.js'),
 	topics = require('./topics.js'),