Graph Editor

Prompt

Please create a vis.js application that will allow me to read in a JSON file of nodes and edges and then allow me to edit the graph by adding, updating and removing nodes and edges and their properties.
Have a menu in the top left to load a JSON file and a menu to save the JSON file.
Use the vis.js default node editing tools. Use a property editor to allow each node to have the following properties:

1. label
2. group
3. shape
4. backgroundColor
5. url
6. description

each node should have the following properties:

1. label
2. width
3. color
4. description