[9208] Big cleanup in UNIT_STAT_* use

* Re-number enums by function groups and use where possible new defined masks in code instead raw enum |-lists.
* Avoid use movement generator generic state markers like UNIT_STAT_CONFUSED for mark movement stoped.
  Add special shadow UNIT_STAT_CONFUSED_MOVE/etc states for like use.
  UNIT_STAT_CONFUSED in like case will be safe expect use for normal checks confused state presence
  And UNIT_STAT_CONFUSED_MOVE for check real move in this state

src/game/Spell.cpp

@@ -2925,7 +2925,7 @@ void Spell::update(uint32 difftime)
                         cancel();
 
                     // check for incapacitating player states
-                    if( m_caster->hasUnitState(UNIT_STAT_STUNNED | UNIT_STAT_CONFUSED))
+                    if( m_caster->hasUnitState(UNIT_STAT_CAN_NOT_REACT))
                         cancel();
 
                     // check if player has turned if flag is set