Password expiration feature #102

It's still missing an enforcement which redirects all actions to profile
update until the password is changed

src/User/Module.php

@@ -128,4 +128,8 @@ class Module extends BaseModule
      * @var string the session key name to impersonate users. Please, modify it for security reasons!
      */
     public $switchIdentitySessionKey = 'yuik_usuario';
+    /**
+     * @var integer If != NULL sets a max password age in days
+     */
+    public $maxPasswordAge = null;
 }