Core/Units: Take into account HoverHeight in IsWithinMeleeRange

Fixes #12059
Closes #13104
Scripts/UtgardePinnacle: King Ymiron

- Updated to EventMaps
- Replaced manual summons with proper spells
- Fixed glitch where boss would resume fight/run back to his main target before the ancestor summon roleplay was over (it might still need few adjustments i.e fire on boat is currently missing)
- Implemented damage calculation for spell Dark Slash (http://www.wowhead.com/spell=48292) as previously the spell would do no damage and it's BasePoints is 0
Scripts/UtigardePinnacle: Use a generic spell to calculate the damage for Dark Slash instead

Thanks to @Vincent_Michael for the heads up
Script/CoS: Fix quest credit for mal ganis (but @Aokromes like more HACKS)
Core/Chat: cleanup MonsterText methods
Scripts/CoS: Salarmm rewritten to BossAI/EventMap
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4

Conflicts:
	src/server/game/Achievements/AchievementMgr.cpp
	src/server/game/Entities/Object/Object.cpp
	src/server/game/Entities/Player/Player.cpp
	src/server/game/Entities/Player/Player.h
	src/server/game/Entities/Unit/Unit.h
	src/server/game/Handlers/ChatHandler.cpp
	src/server/game/Spells/SpellEffects.cpp
	src/server/scripts/Commands/cs_wp.cpp
	src/server/scripts/EasternKingdoms/Deadmines/instance_deadmines.cpp
	src/server/scripts/EasternKingdoms/ZulAman/boss_hexlord.cpp
	src/server/scripts/EasternKingdoms/ZulAman/boss_nalorakk.cpp
	src/server/scripts/EasternKingdoms/zone_silverpine_forest.cpp
	src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/instance_hyjal.cpp