working on translation

static/templates/archive.st

@@ -25,8 +25,8 @@
 «else»
         <table id="archive">
             <tr>
-                <th>Month</th>
-                <th>Number of messages</th>
+                <th>Monat</th>
+                <th>Zahl der Nachrichten</th>
             </tr>
         </table>
         <script type="text/javascript">