Done with Shacler Logging

I added two handlers to the logger in the shacler.py 1st the StreamHandler writng proper output to the Console 2nd a FileHandler writing output to a dedicated file

The module works in isolation as well as in combination with the Schemaforge Web-app. In isolation the parameters are added as decorators to the Function. -d for debug=True and -l app.log to enable the logfile and write to the file "app.log"