Ports vg's library machinery, also flagging books

SQL/paradise_schema_prefixed.sql

@@ -401,6 +401,7 @@ CREATE TABLE `SS13_library` (
   `content` text NOT NULL,
   `category` text NOT NULL,
   `ckey` varchar(45) NOT NULL,
+  `flagged` int(11) NOT NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=MyISAM AUTO_INCREMENT=929 DEFAULT CHARSET=latin1;
 /*!40101 SET character_set_client = @saved_cs_client */;