DB/Loot: Harbinger Skyriss

By MitchesD, closes #11670
DB/Creature: Fix wrong npcflag for Alchemist Kanhu

By MrSmite, closes #11671
DB/Items: Fix some startup errors

Updates #11587
Build fixxed
Herman Walker, Grumman Slatefist and Shenarial are now officially battlemasters. Karg Skullgore & Sawemba have been reassigned to their duty of random BGs battlemasters.
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore