Updated how the form jumps to errors on reload

It was inserting "#undefined" when there was no error

apps/map/templates/map/form.html

@@ -571,7 +571,7 @@ initDrafts()
 <script>
   <!-- Jump to error -->
   $(function() {
-    if ($('.has-error')) {
+    if ($('.has-error').length) {
       location.href = '#' + $('.has-error:first').attr('id');
     }
   });