config.php: add search.max_weight to the configuration options

inc/config.php

@@ -1856,6 +1856,10 @@
     // Limit of search results
     $config['search']['search_limit'] = 100;
 
+    // Maximum weigth of the search query.
+    // Body search filters are discarded if they make the query heavier than this.
+    $config['search']['max_weight'] = 80;
+
     // Boards for searching
     //$config['search']['boards'] = array('a', 'b', 'c', 'd', 'e');