/**
* Deactivates a setting
*
* @param $key
* @param null|string $category
* @return bool
*/
public function deactivate($key, $category = null)
{
if (is_null($category)) {
$pieces = explode('.', $key);
$category = $pieces[0];
$key = $pieces[1];
}
return $this->model->deactivateSetting($category, $key);
}