gui: Switch code to use ndn-cxx

Implementation moved to ndn::chronoshare namespace

Note that NDN.JS interface to access ChronoShare state is broken

Change-Id: I07a8697c5cc56b3922cc3decb7a257f2ec6d76a8
diff --git a/gui/main.cpp b/gui/main.cpp
index ddebf16..f025897 100644
--- a/gui/main.cpp
+++ b/gui/main.cpp
@@ -19,7 +19,8 @@
  */
 
 #include "chronosharegui.hpp"
-#include "logging.hpp"
+#include "core/logging.hpp"
+
 #include <QApplication>
 
 int
@@ -31,7 +32,7 @@
   app.setQuitOnLastWindowClosed(false);
 
   // invoke gui
-  ChronoShareGui gui;
+  ndn::chronoshare::ChronoShareGui gui;
 
   return app.exec();
 }