Core/Battle.net: Use real account name from account table to auth instead of always constructing bnetId#index. Fixes having to reconfigure addons by players.

*NEW* battle.net only accounts should be created with battlenet_account_id#account_index format in username

src/server/authserver/Main.cpp

@@ -28,7 +28,7 @@
 #include "AsyncAcceptor.h"
 #include "AuthSession.h"
 #include "BattlenetManager.h"
-#include "BattlenetSession.h"
+#include "BattlenetSessionManager.h"
 #include "Common.h"
 #include "Configuration/Config.h"
 #include "Database/DatabaseEnv.h"