DB/Misc: Spawn some missing gameobjects

Data by KirkHammett
Core/Scripting: A little update to Hellfire Ramparts. Thanks joschiwald.
Core/Scripting: A couple fixes for Hellfire Ramparts.
Core/Scripting: Fixup Onyxia Script to use events.
Core/Scripting: Some cleanup for Hyjal Script.
Shared/Utils: Fixed ApplyPercentModFloatVar.

This has been around since 2010-12-11 :)
Core/Scripting: Additions to Shade of Akama Script. Just ending sequence left to do.

Please supply feedback if anything is not like offi so I can fix.
Core/Scripting: Minor fix to Shade of Akama Script.
Revert "Shared/Utils: Fixed ApplyPercentModFloatVar."

This reverts commit 2005be04740406f17bd8af8569f2cd75aa0614d4.

Note to self: do not touch maths past 10 any more.
Scripts/Akama: Uninitialized variable
DB/Misc: Fix some spam

Fix by KirkHammett
Core/Quests: Fixed quest sharing
DB/Waypoints: Add some waypoints to black Temple Instance.
DB/Waypoints: Add waypoints to Black Temple instance.
DB/Waypoints: Add missing .sql to file
DB/Misc: Fix Blowing Hodir's Horn

Fix by KirkHammett closes #10270
DB/EAI: Remove forgotten EAI scripts

984fa01b61d814e3864
Core/Scripting: Add Wrathbone Flayer script to show channelling visual and correct combat AI.
Core/Movement: Do not remove movement flags that have special opcodes associated with them on teleport

Closes #10162
Script/Commands: Fix a crash in .arena captain command