$this->add_template('formcontrol_text', Site::get_dir( 'theme' ).'/custom_formcontrol_text.php', true);
$this->add_template('formcontrol_textarea', Site::get_dir( 'theme' ).'/custom_formcontrol_textarea.php', true);
$this->add_template('formcontrol_submit', Site::get_dir( 'theme' ).'/custom_formcontrol_submit.php', true);