[TW218] - Core/Scripts: Black Temple - Don't allow the Shade of Akama event to be started a second time if it's already done
[TW219] - DB/SQL: Correct a criteria_id typo at Set Us Up the Bomb SQL
[TW220] Core/Spells: Attempt to hack fix Shadowform stucking issue

based on garyfisher's hack
[TW221] - Core/Scripts: Implement I could say that this cache was rare achievement from Hodir
[TW222] - Core/Scripts: Prevent multiple Twilight Corrupters from being summoned

Refers to http://www.truewow.org/bugs/view.php?id=228
Merge branch 'master' of https://github.com/TrueWoW/TrinityCore