Implement message modes for 9.6

Fix possible crash when closing otclient
Fix private messages
Fix messages in 9.6

src/framework/core/application.cpp

@@ -97,6 +97,9 @@ void Application::deinit()
 
     // poll remaining events
     poll();
+
+    // disable dispatcher events
+    g_dispatcher.shutdown();
 }
 
 void Application::terminate()
@@ -115,9 +118,6 @@ void Application::terminate()
     // terminate script environment
     g_lua.terminate();
 
-    // flush remaining dispatcher events
-    g_dispatcher.flush();
-
     m_terminated = true;
 }