Issue #1625 add array key for dataset

add array keys for body data helpful when selecting via javascript

also separates ids for combined tags and albums

include/page_header.php

@@ -50,7 +50,7 @@ $template->assign(
 
     'BODY_CLASSES' => $page['body_classes'],
 
-    'BODY_DATA' => json_encode($page['body_classes']),
+    'BODY_DATA' => json_encode($page['body_data']),
   )
 );