Missing json view file added

- return attributes fails when requesting the results in JSON
- added missing view file

app/View/Attributes/json/return_attributes.ctp

@@ -0,0 +1,11 @@
+<?php
+$jsonArray = array();
+foreach ($results as $k => $v) {
+	unset (
+			$results[$k]['value1'],
+			$results[$k]['value2'],
+			$results[$k]['category_order']
+	);
+	$jsonArray['response']['Attribute'][] = $results[$k];
+}
+echo json_encode($jsonArray);