[7399] Rewrited BattleGround starting code - moved it to battleground class. Author: Triply

Fixed message color for premature finish warnings.
    Fixed .debug bg command won't allow 1v0 arenas now, only battlegrounds 1v0.
    Added battleground announcer message removed in [7384].

[7401] Fixed bgqueue invitation to already started battlegrounds - not tested. Author: Triply

--HG--
branch : trunk

src/game/BattleGroundEY.h

@@ -304,6 +304,8 @@ class BattleGroundEY : public BattleGround
 
         /* inherited from BattlegroundClass */
         virtual void AddPlayer(Player *plr);
+        virtual void StartingEventCloseDoors();
+        virtual void StartingEventOpenDoors();
 
         /* BG Flags */
         uint64 GetFlagPickerGUID() const    { return m_FlagKeeper; }