Core/Spells : Fixed talent Mage "Reactive Barrier"

Core/Spells : Fixed talent Warlock "Jinx"
Core/Spells : Fixed a bug for spell "Jinx" (duration is now correct)
Core/Spells : Fixed spell Mage "Polymorph" (Now break on damage).
Core/Spells : Fixed a bug with talent "Nether Vortex" (Slow is now applied on target not caster).
Core/Spells : Revert an old fix for Paladin spell "Grand Crusader".
Core/Spells : Some minor fixes for Shaman talent "Focused insight" and "Unleash Elements".