/**
	 * Displays user subscription and link to invoice HTML (if allowed)
	 *
	 * @param  UserTable  $user
	 * @param  string     $htmlTabDescription
	 * @return string
	 */
	public function displaySubscriptionsAndInvoicesLink( $user, $htmlTabDescription = null ) {
		global $_CB_framework;

		$return					=	'';
		$params					=	$this->params;

		$itsmyself				=	( $_CB_framework->myId() == $user->id );
		$displayToMe			=	$itsmyself;
		if ( ! $itsmyself ) {
			$displayToMe		=	cbpaidApp::authoriseAction( 'cbsubs.usersubscriptionview' );
			if ( $displayToMe ) {
				$itsmyself		=	cbpaidApp::authoriseAction( 'cbsubs.usersubscriptionmanage' );
			}
		}
		if ( $user->id && $displayToMe ) {

			$basketsMgr				=&	cbpaidOrdersMgr::getInstance();
			$basketsMgr->timeoutUnusedBaskets( $user->id );

			$subscriptionsGUI		=	new cbpaidControllerUI();
			$htmlSubscriptionsAndUpgrades =	$subscriptionsGUI->getShowSubscriptionUpgrades( $user, $itsmyself );

			$htmlInvoicesLink		=	null;
			$showInvoices			=	$params->get( 'show_invoices', 1 );
			$invoicesShowPeriod		=	$params->get( 'invoices_show_period', '0000-06-00 00:00:00' );
			if ( $showInvoices ) {
				$invoicesNumber		=	$this->_getInvoices( $user, $invoicesShowPeriod, true );
				if ( $invoicesNumber > 0 ) {
					$invoicesListUrl =	$this->getInvoicesListUrl( $user );
					if ( $invoicesShowPeriod && ( $invoicesShowPeriod != '0000-00-00 00:00:00' ) ) {
						$cbpaidTimes	=&	cbpaidTimes::getInstance();
						$periodText		=	$cbpaidTimes->renderPeriod( $invoicesShowPeriod, 1, false );
					} else {
						$periodText		=	'';
					}
					$htmlInvoicesLink	=	$subscriptionsGUI->showInvoicesListLink( $invoicesNumber, $invoicesListUrl, $user, $itsmyself, $periodText );
				}
			}

			$tabTitleText			=	$params->get( 'profileTitle', "Your subscriptions" );

			/** @var $viewer cbpaiduserprofilesubstabView */
			$viewer					=	cbpaidTemplateHandler::getViewer( null, 'userprofilesubstab' );
			$viewer->setModel( $user );
			$return					.=	$viewer->drawTab( $htmlSubscriptionsAndUpgrades, $htmlInvoicesLink, $tabTitleText, $htmlTabDescription );
		}
		return $return;
	}