added completion count to export page

website/js/pages/export.js

@@ -56,6 +56,7 @@ function renderExport(questionnaires) {
                     <th>Version</th>
                     <th>State</th>
                     <th>Questions</th>
+                    <th>Completed</th>
                     <th>Actions</th>
                 </tr>
             </thead>
@@ -66,6 +67,7 @@ function renderExport(questionnaires) {
                         <td>${esc(q.version || '—')}</td>
                         <td><span class="badge badge-${(q.state || 'draft').toLowerCase()}">${esc(q.state || 'draft')}</span></td>
                         <td>${q.questionCount || 0}</td>
+                        <td>${q.completedCount ?? 0}</td>
                         <td>
                             <button class="btn btn-sm btn-primary export-btn" data-id="${q.questionnaireID}" data-name="${esc(q.name)}" data-version="${esc(q.version)}">
                                 Export CSV