Generalize ignoring sticky threads on overboard catalogs

templates/themes/catalog/catalog.html

@@ -6,7 +6,8 @@
 	 <meta name="viewport" content="width=device-width,initial-scale=1.0">
 	<script type='text/javascript'>
 		var active_page = "catalog"
-		  , board_name = "{{ board.uri }}";
+		  , board_name = "{{ board.uri }}"
+		  , is_overboard = "{{ is_overboard }}";
 	</script>
 		<title>{{ settings.title }} ( /{{ board.title|e }}/ )</title>
 	{% include 'header.html' %}

templates/themes/catalog/theme.php

@@ -488,6 +488,7 @@
                 'recent_posts' => $recent_posts,
                 'stats' => array(),
                 'board' => $board,
+                'is_overboard' => $is_overboard,
                 'link' => $board_link,
                 'no_post_form' => false,
             );