Count in-contest submissions on submission list

This is to make comparing with a shadow CCS easier, as we don't
want to include jury submissions here. Filter out submissions in
invisible categories.

webapp/src/Service/SubmissionService.php

@@ -282,6 +282,14 @@ public function getSubmissionList(
             ->andWhere($countQueryExtras['queued'])
             ->getQuery()
             ->getSingleScalarResult();
+        $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();
 
         return [$submissions, $counts];
     }

webapp/templates/jury/partials/submission_list.html.twig

@@ -41,6 +41,10 @@
         {% if submissionCounts.queued > 0 %}
             <span class="badge text-bg-danger">{{ submissionCounts.queued }} queued (from {{submissionCounts.perteam}} teams)</span>
         {% endif %}
+
+        {% if submissionCounts.inContest > 0 %}
+            <span class="badge text-bg-secondary">{{ submissionCounts.inContest }} in contest</span>
+        {% endif %}
     </div>
 
     <table class="data-table table table-hover table{% if showExternalResult and showExternalTestcases %}-3{% endif %}-striped table-sm submissions-table table-full-clickable-cell">