fixed user edit email check

src/Auth/Business/LuticateUsersBusiness.php

     public static function edit($user_id, $firstname, $lastname, $email)
     {
         $user = self::checkUserId($user_id);
+        if (!filter_var($email, FILTER_VALIDATE_EMAIL))
+            self::badInput("Invalid email address");
         $user->setEmail($email);
         $user->setFirstname($firstname);
         $user->setLastname($lastname);