Filter out submissions in invisible categories

Author: Kevinjil

webapp/src/Service/SubmissionService.php

@@ -285,7 +285,9 @@ public function getSubmissionList(
         $counts['inContest'] = (clone $queryBuilder)
             ->select('COUNT(s.submitid)')
             ->join('s.contest', 'c')
+            ->join('t.category', 'tc')
             ->andWhere('s.submittime BETWEEN c.starttime AND c.endtime')
+            ->andWhere('tc.visible = true')
             ->getQuery()
             ->getSingleScalarResult();