Changes to work with Mac

Changes include:
- Updating Project
- fixing sendto declaration
- Fixed some bugs in #if Mac sections
- Removed unneeded #includes (my compiler didn’t like them)

xpcPlugin/XPCPlugin.cpp

@@ -58,7 +58,6 @@
 #include "DataManager.h"
 #include "Drawing.h"
 #include "Log.h"
-#include "Message.h"
 #include "MessageHandlers.h"
 #include "UDPSocket.h"