Add basic classes for application. Move source around and properly fix up build system to link and use correct c++ compiler version.

src/main.cpp

@@ -0,0 +1,8 @@
+#include <iostream>
+#include "WebInterface.h"
+
+int main ( int argc, char** argv )
+{
+    std::cout << "Hello, world!" << std::endl;
+    return 0;
+}