Scripts/Kelthuzad: move spells into spelldifficulty_dbc and cleanup
Scripts/ZulGurub: clean up the code and remove old hacks
DB/SAI: Runes of Compulsion (Quest: 12093)

Closes #4898
DB/NPCText: Conversion to BroadcastText system for npc text (part IV)
DB/BroadcastText: Corrected texts using backslashes and ALL the errored "EmoteDelay"s due to a fail in the parser *cough* *cough*
Scripts/UtgardeKeep: fixed some issues on Ingvar the Plunderer

Closes #10859
Merge pull request #11787 from MitchesD/misc

Scripts/ZulGurub: clean up the old code
Merge pull request #11614 from MitchesD/kelthuzad

Scripts/Kelthuzad: move spells into spelldifficulty_dbc and cleanup
Rename 2014_02_15_00_world_spelldifficulty_dbc.sql to 2014_04_17_01_world_spelldifficulty_dbc.sql
DB/Creatures: Added trigger flag to the remaining triggers
Core/BattleGrounds: SOTA teleport

Removes the teleport trigger from behind the gate when the gate is
destroyed.
Now using the teleport will then move you to behind the next gate on
that side.
Core/Spells: Talent Art of War (Rank 2)

Makes it so instant cast of flash of light or exorcism doesn't reset the
swing timer.
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore