Add historyType and historyId to Appeal, update database schema, API, and email templates to include punishment details.

backend/src/main/resources/templates/appeal-email.html

@@ -17,7 +17,9 @@
     <li><strong>Username:</strong> <span th:text="${appeal.username}">username</span></li>
     <li><strong>UUID:</strong> <span th:text="${appeal.uuid}">uuid</span></li>
     <li><strong>Email:</strong> <span th:text="${appeal.email}">email</span></li>
-    <li><strong>Submitted:</strong> <span th:text="${appeal.createdAt}">date</span></li>
+    <li><strong>Submitted at:</strong> <span th:text="${createdAt}">date</span></li>
+    <li><strong>Reason:</strong> <span th:text="${history.reason}">reason</span></li>
+    <li><strong>Active:</strong> <span th:text="${active}">unknown</span></li>
 </ul>
 <h3>Appeal:</h3>
 <p th:text="${appeal.reason}">Reason text</p>