removed mock from setup.py.in as its not needed in python3, added formal script to run coretk gui and remove main line from core/gui/app.py

daemon/scripts/coretk-gui

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+import logging
+
+from core.gui import appconfig
+from core.gui.app import Application
+from core.gui.images import Images
+
+if __name__ == "__main__":
+    log_format = "%(asctime)s - %(levelname)s - %(module)s:%(funcName)s - %(message)s"
+    logging.basicConfig(level=logging.DEBUG, format=log_format)
+    Images.load_all()
+    appconfig.check_directory()
+    app = Application()
+    app.mainloop()