Core/Spells: Reset Mangle cooldown in Berserk

sql/updates/world/3.3.5/2018_06_04_00_world.sql

@@ -0,0 +1,3 @@
+DELETE FROM `spell_script_names` WHERE `ScriptName`='spell_dru_berserk';
+INSERT INTO `spell_script_names`(`spell_id`, `ScriptName`) VALUES
+(-50334,'spell_dru_berserk');