[activity report count] do not count activities from centers not selected

Export/Export/CountActivity.php

@@ -69,6 +69,7 @@ class CountActivity implements ExportInterface
     public function initiateQuery(array $requiredModifiers,  array $acl, array $data = array())
     {
         $qb = $this->entityManager->createQueryBuilder();
+        $centers = array_map(function($el) { return $el['center']; }, $acl);
         
         $qb->select('COUNT(activity.id) as export_count_activity')
                 ->from('ChillActivityBundle:Activity', 'activity')
@@ -78,6 +79,10 @@ class CountActivity implements ExportInterface
             $qb->join('activity.person', 'person');
         }
         
+        $qb->where($qb->expr()->in('person.center', ':centers'))
+            ->setParameter('centers', $centers)
+            ;
+        
         return $qb;
     }