Replace the OnHealthCritical and OnHealthHalf handlers to OnCheckHealthAndMana
Replace IsHealthHalth and IsHealthCritical functions to IsHealthLess
Replace IsManaCritical function to IsManaLess
Fix all classes scripts according new IsHealthLess and IsManaLess functions
Fix all classes scripts according new OnCheckHealthAndMana handler
Use the kBarFull constant in the IsTargetDamaged function