move errorToException 'appendTop' javascript into 'js' hook

since this also fixes not having had this in backend_header before.

include/plugin_api.inc.php

@@ -34,25 +34,6 @@ function serendipity_plugin_api_frontend_header($event_name, &$bag, &$eventData,
     <script>jQuery.noConflict();</script>
 <?php
     }
-    // add a global available (index.tpl; admin/index.tpl; preview_iframe.tpl) redirect error string function used by errorToExceptionHandler()
-    // hardened by admin only - better have that here, to be reachable everywhere
-    if ($serendipity['production'] === true) {
-        if( $serendipity['serendipityUserlevel'] >= USERLEVEL_ADMIN ) {
-?>
-    <script type="text/javascript">
-        function create(htmlStr) {
-            var frag = document.createDocumentFragment(),
-                temp = document.createElement("div");
-                temp.innerHTML = htmlStr;
-            while (temp.firstChild) {
-                frag.appendChild(temp.firstChild);
-            }
-            return frag;
-        }
-    </script>
-<?php
-        }
-    }
 }
 
 // Add jquery to all backend templates