Move serendipity_editor.js to head.

NOTE: This is probably only temporary so that unported JS functions
      will still work. In the end, we'll want to references this
      file right before the closing </body> tag since it's going
      to get pretty big.

templates/2k11/admin/index.tpl

@@ -14,6 +14,7 @@
     <link rel="stylesheet" href="{$admin_vars.admin_css_file}">
     <script src="{serendipity_getFile file='admin/js/modernizr-2.6.2.min.js'}"></script>
     <script src="{serendipity_getFile file='admin/header_spawn.js'}"></script>
+    <script src="{serendipity_getFile file='admin/serendipity_editor.js'}"></script>
 {if $admin_vars.admin_installed}
     {serendipity_hookPlugin hook="backend_header" hookAll="true"}
 {/if}
@@ -185,6 +186,5 @@
         <p>{$admin_vars.version_info}</p>
     </footer>
 {/if}
-    <script src="{serendipity_getFile file='admin/serendipity_editor.js'}"></script>
 </body>
 </html>