Create converter to HTML5 mindmap solution


We need to produce a JSON which can be consumed by an HTML5 graph browser or maybe even editor (less important for now, as content production is meant to happen in the wiki) 

Browser:

- **[GoJS](https://gojs.net/latest/samples/mindMap.html)**

Editor: 

**[Mindmaps Github](https://github.com/drichard/mindmaps)** ([view online](http://drichard.org/mindmaps/#))


