feature 2387: addd a filter by tag in the batch manager (merge from trunk)

git-svn-id: http://piwigo.org/svn/branches/2.2@11854 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/batch_manager_global.php

@@ -486,6 +486,15 @@ $template->assign(
     )
   );
 
+if (!empty($_SESSION['bulk_manager_filter']['tags']))
+{
+	$query = '
+SELECT id, name
+	FROM '.TAGS_TABLE.'
+	WHERE id IN ('.implode(',', $_SESSION['bulk_manager_filter']['tags']).')';
+	$template->assign('filter_tags', get_taglist($query));
+}
+
 // Virtualy associate a picture to a category
 $query = '
 SELECT id,name,uppercats,global_rank