Core/Conditions: Implement CONDITION_CREATURE_TYPE - 24
Core/Conditions: Missing grid search support for CONDITION_CREATURE_TYPE
Scripts/OnyxiasLair: Fix a crash in boss_onyxia

Closes #10393

Note: this just fixes the crash, not the issues the script has (a.k.a rewrite this)
Revert "CMake/MSVC: Fix VS 2013 compile -- Zm500 hack is no longer required"

This reverts commit ca7377369f603081259adea0ba49cb03e74e609f.
Merge pull request #9862 from Ric101/condition_creature_type

Core/Conditions: Implement CONDITION_CREATURE_TYPE - 24
Scripts/DrakTharonKeep: fix copy paste fail

Closes #10402
Config: Change ProcessPriority default to 0 (Normal)

On Linux, superuser (root) is required to set a process high priority and we shouldn't force that.
(It's already set to 0 (Normal) in worldserver\Master.cpp and authserver\Main.cpp)
Core/Spells: Fix try for logic fail in 4ba3c2e51df0485449a4bd01f162faa719334be9
Core/Battleground: fix type mismatch

Ref #10320
Core/Battlegrounds: Fixed error with counting AB owned nodes (and warning fixes)
Merge remote-tracking branch 'TrinityCore/master'

Conflicts:
	src/server/scripts/Kalimdor/OnyxiasLair/boss_onyxia.cpp