dnn updated ad connected, add edges, different test cases

01_Code/physical_computing_interface/demos/app1.js

01_Code/physical_computing_interface/demos/indexDNN.html

01_Code/physical_computing_interface/dnn/graph.js

01_Code/physical_computing_interface/dnn/script.js

01_Code/physical_computing_interface/globals.js

01_Code/physical_computing_interface/graph/graph.js

01_Code/physical_computing_interface/json/json.js

...physical_computing_interface/lib/cytoscape-edgehandles.js

01_Code/physical_computing_interface/threejs/grid.js