Core/Handlers: Allow gamemasters to send mails with customer support badge depending on gm mode (.gm off/on)

src/server/game/Mails/Mail.cpp

@@ -60,6 +60,13 @@ MailSender::MailSender(AuctionEntry* sender)
 {
 }
 
+MailSender::MailSender(Player* sender)
+{
+    m_messageType = MAIL_NORMAL;
+    m_stationery = sender->isGameMaster() ? MAIL_STATIONERY_GM : MAIL_STATIONERY_DEFAULT;
+    m_senderId = sender->GetGUIDLow();
+}
+
 
 MailReceiver::MailReceiver(Player* receiver) : m_receiver(receiver), m_receiver_lowguid(receiver->GetGUIDLow())
 {

src/server/game/Mails/Mail.h

@@ -95,6 +95,7 @@ class MailSender
         }
         MailSender(Object* sender, MailStationery stationery = MAIL_STATIONERY_DEFAULT);
         MailSender(AuctionEntry* sender);
+        MailSender(Player* sender);
     public:                                                 // Accessors
         MailMessageType GetMailMessageType() const { return m_messageType; }
         uint32 GetSenderId() const { return m_senderId; }