protected void btnUpdateUser_Click(object sender, EventArgs e)
        {
            if (!Page.IsValid)
            {
                //TODO
                return;
            }

            var userId = GetUserId();

            accountUtil.SetEmail(userId, userForm.GetEmailTextBox().Text.Trim());

            if (userForm.GetIsAdminCheckBox().Checked)
            {
                accountUtil.AddToAdminRole(userId);
            }
            else
            {
                accountUtil.RemoveFromAdminRole(userId);
            }

            if (userForm.GetIsSuperuserCheckBox().Checked)
            {
                accountUtil.AddToSuperuserRole(userId);
            }
            else
            {
                accountUtil.RemoveFromSuperuserRole(userId);
            }

            GoToUsersPage();
        }