added Prolog library and launch script for knowrob_vis
added knowrob_cad_parser.pl to knowrob_common to have lookup functionality for package:// urls available
added knowrob_cad_parser.pl to knowrob_common to have lookup functionality for package:// urls available
added utility method for running rosjava nodes from within Prolo
updated visualization canvas predicate and Java implementation: launch rosjava node and start a jetty webserver for serving the html pages of the web interface
added HTML files of the web interface