Auras → Grids Relation

File in server/game/Spells/Auras	Includes file in server/game/Grids
SpellAuraEffects.cpp	Cells / CellImpl.h
SpellAuraEffects.cpp	Notifiers / GridNotifiersImpl.h
SpellAuras.cpp	Cells / CellImpl.h
SpellAuras.cpp	Notifiers / GridNotifiersImpl.h