fix(Core/Spells): Master of Elements (#7102)

* Core/Spells: Master of Elements:

Proc now also from arcane spells.
Properly proc from periodic spells.
Fixed #6035.

* You shouldn't be there.

* Buildfix.

* missing sql.

src/server/game/Spells/Spell.h

@@ -715,6 +715,7 @@ protected:
     // we can't store original aura link to prevent access to deleted auras
     // and in same time need aura data and after aura deleting.
     SpellInfo const* m_triggeredByAuraSpell;
+    int8 m_triggeredByAuraEffectIndex;
 
     bool m_skipCheck;
     uint8 m_auraScaleMask;