More up-to-date map (download and render on request)

[milliams]

When creating a print-out, it would be good if the map could be more up-to-date. Perhaps if on creating the scan, the site could query the API to re-download that area from OSM and re-render it on the fly. Since walking papers is usually used only for small areas at only 1 zoom level, the load should be minimal. I assumed that this is what the 'Redo' button would do but it still gives a map which is about a week old.