Fix SQL schema errors

setup/inc/sql/02decaa2-60fcbee1.patch.sql

+-- Update all temlates with the new wording.
 UPDATE `%TABLE_PREFIX%email_template`
-    SET `overlimit_body` = '%name\r\n\r\nYou have reached the maximum number of open tickets allowed.\r\n\r\nTo be able to open another ticket, one of your pending tickets must be closed. To update or add comments to an open ticket simply login using the link below.\r\n\r\n%url/view.php?e=%email\r\n\r\nThank you.\r\n\r\nSupport Ticket System'
-    WHERE `tpl_id` = 1 AND `cfg_id` = 1;
+    SET `ticket_overlimit_body` = '%name\r\n\r\nYou have reached the maximum number of open tickets allowed.\r\n\r\nTo be able to open another ticket, one of your pending tickets must be closed. To update or add comments to an open ticket simply login using the link below.\r\n\r\n%url/view.php?e=%email\r\n\r\nThank you.\r\n\r\nSupport Ticket System';
 
 UPDATE `%TABLE_PREFIX%config`
     SET `schema_signature`='60fcbee1da3180d1b690187aa5006c88';

setup/inc/sql/60fcbee1-f8856d56.patch.sql

-ALTER TABLE `%TABLE_PREFIX%history`
-    ADD `staff_id` int(11) unsigned NOT NULL AFTER `ticket_id`,
-    ADD `team_id` int(11) unsigned NOT NULL AFTER `staff_id`,
-    ADD `dept_id` int(11) unsigned NOT NULL AFTER `team_id`,
-    ADD `topic_id` int(11) unsigned NOT NULL AFTER `dept_id`;
+DROP TABLE IF EXISTS `%TABLE_PREFIX%ticket_event`;
+CREATE TABLE `%TABLE_PREFIX%ticket_event` (
+  `ticket_id` int(11) unsigned NOT NULL default '0',
+  `staff_id` int(11) unsigned NOT NULL,
+  `team_id` int(11) unsigned NOT NULL,
+  `dept_id` int(11) unsigned NOT NULL,
+  `topic_id` int(11) unsigned NOT NULL,
+  `state` enum('created','closed','reopened','assigned','transferred','overdue') NOT NULL,
+  `staff` varchar(255) NOT NULL default 'SYSTEM',
+  `timestamp` datetime NOT NULL,
+  KEY `ticket_state` (`ticket_id`, `state`, `timestamp`),
+  KEY `ticket_stats` (`timestamp`, `state`)
+) ENGINE=MyISAM  DEFAULT CHARSET=utf8;
 
-RENAME TABLE `%TABLE_PREFIX%history` TO `%TABLE_PREFIX%event`;
+DROP TABLE IF EXISTS `%TABLE_PREFIX%ticket_history`;
+DROP TABLE IF EXISTS `%TABLE_PREFIX%history`;
 
 UPDATE `%TABLE_PREFIX%config`
     SET `schema_signature`='f8856d56e51c5cc3416389de78b54515';