Submissions: reject XML project files, show submitted file names to admin

web/src/main/resources/templates/admin/lab.html

@@ -129,6 +129,9 @@
                             <a th:if="${s.submissionId}" class="cell-link"
                                th:href="'/admin/submissions/' + ${s.submissionId} + '/download'">
                                 попытка <span th:text="${s.submissionSeq}">1</span> ↓</a>
+                            <div th:if="${!#lists.isEmpty(s.submissionFiles)}" class="text-muted text-sm font-mono">
+                                <span th:text="${#strings.listJoin(s.submissionFiles, ', ')}">main.c</span>
+                            </div>
                             <span th:unless="${s.submissionId}" class="text-muted">—</span>
                         </td>
                     </tr>