update models + added social network account services

lib/User/Module.php

@@ -58,6 +58,15 @@ class Module extends \yii\base\Module
      * @var array MailService configuration
      */
     public $mailParams = [];
+    /**
+     * @var int the cost parameter used by the Blowfish hash algorithm.
+     * The higher the value of cost,
+     * the longer it takes to generate the hash and to verify a password against it. Higher cost
+     * therefore slows down a brute-force attack. For best protection against brute-force attacks,
+     * set it to the highest value that is tolerable on production servers. The time taken to
+     * compute the hash doubles for every increment by one of $cost.
+     */
+    public $blowfishCost = 10;
 
     /**
      * @var array the url rules (routes)