Core/Misc: Add the SQLs for ticket reset

sql/updates/world/2011_10_07_01_world_command.sql

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+DELETE FROM `command` WHERE `name` = 'ticket reset';
+INSERT INTO `command` (`name`, `security`, `help`) VALUES 
+('ticket reset', 3, 'Syntax: .ticket reset\nRemoves all closed tickets and resets the counter, if no pending open tickets are existing.');

sql/updates/world/2011_10_07_02_world_trinity_string.sql

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+DELETE FROM `trinity_string` WHERE `entry` IN(2027,2028);
+INSERT INTO `trinity_string` (`entry`, `content_default`) VALUES 
+('2027', 'There are pending open tickets, please close them first!'),
+('2028', 'All closed tickets were deleted and counter is reseted to |cffff00ff 1|r');