Remove ids from pagination hidden inputs

Since pagination is typically duplicated on the page, these element ids
would also be duplicated.

application/views/scripts/common/pagination_control.php

@@ -27,7 +27,7 @@
 
         foreach ($hiddenParams as $key => $value) {
             if ($key != 'page') {
-                echo $this->formHidden($key, $value);
+                echo $this->formHidden($key, $value, array('id' => ''));
             }
         }