[7276] Rewrited fix for same faction arena matches

Added better Object-oriented calls to BattleGround::Reset()
    Added more checks to CreateBattleGround() method
    This commit doesn't fix anything

Author: Triply

--HG--
branch : trunk

src/game/BattleGroundWS.h

@@ -161,7 +161,7 @@ class BattleGroundWS : public BattleGround
         void HandleAreaTrigger(Player *Source, uint32 Trigger);
         void HandleKillPlayer(Player *player, Player *killer);
         bool SetupBattleGround();
-        virtual void ResetBGSubclass();
+        virtual void Reset();
 
         void UpdateFlagState(uint32 team, uint32 value);
         void UpdateTeamScore(uint32 team);