[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/BattleGroundBE.h

@@ -65,7 +65,7 @@ class BattleGroundBE : public BattleGround
         void RemovePlayer(Player *plr, uint64 guid);
         void HandleAreaTrigger(Player *Source, uint32 Trigger);
         bool SetupBattleGround();
-        void ResetBGSubclass();
+        virtual void Reset();
         virtual void FillInitialWorldStates(WorldPacket &d);
         void HandleKillPlayer(Player* player, Player *killer);
         bool HandlePlayerUnderMap(Player * plr);