Process for reloading geojson while compute in progress

[danrademacher]

• [x] geojson endpoint for each step (vs. HTML endpoint)
• [x] load that geojson in leaflet
• [x] but we need a way to know what's the latest and what's the max step
• [ ] or keep querying the same one and blow out what's there and look for an attribute that says done

That querying is happening in javascript -- repeat until done

Delay first query 5 seconds (setinterval), then start the loop. If done no looping happens

So:

1. wait five seconds
2. ask for geojson
3. increment a variable totalsteps of number of steps +1
4. check if done
5. If done, stop, else start again