Properly detect blocked contingents

public/typo3conf/ext/ep_products/Classes/Service/IcalService.php

@@ -80,7 +80,7 @@ class IcalService implements SingletonInterface
 
             $percentageBooked = 100;
 
-            if ($paxTotal > 0) {
+            if ($paxTotal > 0 && Contingent::STATUS_BLOCKED !== $event->getStatus()) {
                 $percentageBooked = 100 - round($paxAvaiable / $paxTotal * 100);
             }