Core/Account: Move AccountMgr back to singleton
DB/Misc: Proper faction for npc Brann Bronzebeard.

This makes him assist in combat and now the mobs that spawn attack him.
Script/Scholomance: Update Kirtonos the Herald script.
DB/creature: Add some missing Zul'Gurub Panther Trigger spawns
Core/Misc: Delete spell from character_spell table too when encountering an invalid spell
DB/SAI: Fixes quest: Catching up with Brann, closes #8983
DB/Creatures:  cleaning up creature_template_addon, removed auras that where also/already added by SAI, should reduce some runtime errors
DB/Creature: more cleanups in creature_template_addon: remove all pointless entries (0 in all fields, bytes2=1)
DB: Lord Kelris - Correct sound on aggro

Thx @gecko32. Solves #6623
DB: Lord Kelriss - Swap aggro and death text
DB/Conditions: Add level restriction for "Drums of War"
Damn TextEdit
DB/Creatures: more cleanups to creature_addon table: roughly 200 unrequired auras removed, SAI is already applying these....
DB/Creature remove obsolete creature_addon records (default values in all fields)
DB: Kelris - Question instead if exclamation on aggro
Core/Movement: Use a facing spline for chase movement
Core/RA: Warning fix
DB/Gameobjects: flag updates
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore