RGL browser: escape html when printing code (by using .text() instead of .html())

lib/doc/browse/index.html

@@ -98,7 +98,7 @@
     <br style="clear:both" />
   </div>
   <footer id="footer">
-  John J. Camilleri<br/><em>Updated 2013-04-03</em>
+  John J. Camilleri<br/><em>Updated 2013-05-24</em>
   </footer>
   <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
   <script src="jquery.history.min.js"></script>

lib/doc/browse/script.js

@@ -98,7 +98,7 @@ $(document).ready(function() {
         }
     }
     var setCode = function(code) {
-        $('#code pre').html(code);
+        $('#code pre').text(code);
         prettyPrint();
     }
     var updateScopeCount = function(){