Don't display search subtitle on themes page. Props ocean90. See #14579

git-svn-id: http://svn.automattic.com/wordpress/trunk@16525 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/list-table.dev.js

@@ -226,6 +226,9 @@ listTable.init();
 		var data = $(this).parent('.search-box').find(':input').serializeObject();
 
 		listTable.update_rows(data, true, function() {
+			if ( $('h2.nav-tab-wrapper').length )
+				return;
+
 			$('h2 .subtitle').remove();
 
 			if ( data.s )