Core: Allow toggling ticketsystem on/off by config-setting (patch by leak)

Closes issue 4744.

--HG--
branch : trunk

src/server/game/Tickets/TicketMgr.h

@@ -28,7 +28,7 @@
 // from blizzard lua
 enum GMTicketSystemStatus
 {
-    GMTICKET_QUEUE_STATUS_DISABLED = -1,
+    GMTICKET_QUEUE_STATUS_DISABLED = 0,
     GMTICKET_QUEUE_STATUS_ENABLED = 1,
 };
 
@@ -134,6 +134,11 @@ public:
     uint64 GetOpenTicketCount() { return m_openTickets; }
     uint64 GetNextSurveyID() { return ++m_GMSurveyID; }
 
+    void Initialize()
+    {
+        SetStatus(sWorld.getBoolConfig(CONFIG_ALLOW_TICKETS));
+    }
+
     GM_Ticket *GetOldestOpenGMTicket()
     {
         for (GmTicketList::const_iterator i = m_GMTicketList.begin(); i != m_GMTicketList.end(); ++i)