Sort names like they should

calendar/sunbird/base/content/credits.xhtml

@@ -215,6 +215,8 @@
             <li>gekacheka</li>
             <li>Mostafa Hosseini</li>
             <li>Michael Hovis</li>
+            <li>Michiel van Leeuwen</li>
+            <li>Gary van der Merwe</li>
             <li>Joey Minta</li>
             <li>Dan Mosedale</li>
             <li>Simon Paquet</li>
@@ -228,8 +230,6 @@
             <li>Ulf Stroehler</li>
             <li>Rob Strong</li>
             <li>Clint Talbert</li>
-            <li>Gary van der Merwe</li>
-            <li>Michiel van Leeuwen</li>
             <li>Vladimir Vukicevic</li>
             <li>Matthew Willis</li>
           </ul>