Added generic mechanism to add userdata to the grid results. A 'userdata' callout function would be nice, but in practice, userdata may get added anywhere along the line, which is much easier than trying to figure out when to call such a callout and what parameters it would need to be passed.

git-svn-id: file:///svn-source/pmgr/branches/invoice_receipt_20090629@338 97e9348a-65ac-dc4b-aefc-98561f571b83

site/app_controller.php

@@ -403,6 +403,11 @@ class AppController extends Controller {
     echo " <page>$page</page>\n";
     echo " <total>$total</total>\n";
     echo " <records>$records</records>\n";
+
+    if (isset($params['userdata'])) {
+      foreach ($params['userdata'] AS $field => $value)
+	echo ' <userdata name="'.$field.'">' . "{$value}</userdata>\n";
+    }
   }
 
   function jqGridDataOutputRecords(&$params, &$model, &$records) {