Fixed exception in chat logging and fixed issue that caused knowlist

not being updated

dist/sql/log_chat.sql

@@ -3,7 +3,7 @@ CREATE TABLE IF NOT EXISTS `log_chat` (
   `type` enum('ALL','SHOUT','TELL','PARTY','CLAN','GM','PETITION_PLAYER','PETITION_GM','TRADE','ALLIANCE','ANNOUNCEMENT','BOAT','L2FRIEND','MSNCHAT','PARTYMATCH_ROOM','PARTYROOM_COMMANDER','PARTYROOM_ALL','HERO_VOICE','CRITICAL_ANNOUNCE','SCREEN_ANNOUNCE','BATTLEFIELD','MPCC_ROOM') NOT NULL,
   `channel_id` int(12) NOT NULL,
   `sender` int(12) NOT NULL,
-  `date` int(12) NOT NULL,
+  `date` TIMESTAMP NOT NULL,
   `message` text NOT NULL,
   PRIMARY KEY (`message_id`)
 ) ENGINE=MyISAM;