Implement message modes for 9.6

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

src/framework/net/connection.cpp

@@ -41,7 +41,10 @@ Connection::Connection() :
 
 Connection::~Connection()
 {
-    assert(!g_app.isTerminated());
+#ifndef NDEBUG
+    if(g_app.isTerminated())
+        g_logger.warning("Connection reference not released");
+#endif
     close();
 }
 

src/framework/net/protocol.cpp

@@ -33,7 +33,10 @@ Protocol::Protocol()
 
 Protocol::~Protocol()
 {
-    assert(!g_app.isTerminated());
+#ifndef NDEBUG
+    if(g_app.isTerminated())
+        g_logger.warning("Protocol reference not released");
+#endif
     disconnect();
 }