DB/Creature: Fix some startup errors

Updates #11501

sql/updates/world/2014_01_27_19_world_creature_template.sql

@@ -0,0 +1,4 @@
+--
+UPDATE `creature_template` SET `unit_class` = 4 WHERE `entry` IN (34777,35436,36357);
+UPDATE `creature_template` SET `difficulty_entry_1`=34114 WHERE `entry`=33855;
+UPDATE `creature_template` SET `minlevel`=81, `maxlevel`=81 WHERE `entry`=35405;