Merge changes I6521e8c1,I6dec636c,I65d5b63f

* changes:
  jquery: New upstream version 1.7.1 (bug #923192)
  jquery: don't hardcode the version number in lib/web.php
  jquery: remove minified copy from core

htdocs/js/jquery/README.Mahara

+jQuery in Mahara
+=================
+
+Website: http://jquery.com/
+Version: 1.7.1
+
+Changes:
+
+* None

htdocs/lib/web.php

@@ -214,8 +214,7 @@ EOF;
         }
         // Load jquery first, so that it doesn't break Mochikit
         if (($key = array_search('jquery', $check)) !== false) {
-            $jquery = (get_config('developermode') & DEVMODE_UNPACKEDJS) ? 'jquery-1.5.2.js' : 'jquery-1.5.2.min.js';
-            array_unshift($javascript_array, $jsroot . 'jquery/' . $jquery);
+            array_unshift($javascript_array, $jsroot . 'jquery/jquery.js');
             // Make jQuery accessible with $j (Mochikit has $)
             $headers[] = '<script type="text/javascript">$j=jQuery;</script>';
             unset($check[$key]);