Issue backdrop-contrib#10. Replace #dependency with #states

Fixes backdrop-contrib#10.

plugins/views_data_export_plugin_display_export.inc

@@ -135,8 +135,10 @@ class views_data_export_plugin_display_export extends views_plugin_display_feed
           '#type' => 'textfield',
           '#description' => t('Return path after the batched operation, leave empty for default. This path will only be used if the export URL is visited directly, and not by following a link when attached to another view display.'),
           '#default_value' => $this->get_option('return_path'),
-          '#dependency' => array(
-            'radio:use_batch' => array('batch')
+          '#states' => array(
+            'visible' => array(
+              ':input[name="use_batch"]' => array('value' => 'batch'),
+            ),
           ),
         );
         if (!$this->is_compatible()) {