Add ip index to post tables for faster ?/IP/ (and flood detection, etc.)

templates/posts.sql

@@ -28,6 +28,7 @@ CREATE TABLE IF NOT EXISTS ``posts_{{ board }}`` (
    UNIQUE KEY `id` (`id`),
    KEY `thread_id` (`thread`,`id`),
    KEY `time` (`time`),
-   FULLTEXT KEY `body` (`body`)
+   FULLTEXT KEY `body` (`body`),
+   KEY `ip` (`ip`),
  ) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 AUTO_INCREMENT=1 ;