Instance/Halls of Reflection/Lich King event: Implement loot chest in heroic mode and rename chest variables.
Merge pull request #11250 from xjose93/HoR

Instance/Halls of Reflection/Lich King event: Implement loot chest in heroic mode and rename chest variables.
Scripting/Eversong_Woods: Add quest end scripting for quest 8487.
Also fixes for quest 8488 but not completely fixed.
Scriting/Eversong Woods: Minor fix.
Core/Player: Allow questgiver, if npc, to cast quest RewSpellCast & RewSpell rather than player.
Merge https://github.com/TrinityCore/TrinityCore