Automatically update leaflet map when database is re-created

[hturner]

At the moment the global map in the slideshow on the homepage is just updated periodically.

It would be great to have a script that automatically updates the map (or creates a similar map) when the database is re-built.

[annajayne]

The map was generated using openstreetmap + leaflet and then cropped to fit the pins.

I haven't found a way to save a copy of the map and crop it appropriately, but I'm open to suggestions.

[annajayne]

Reposted to https://bitbucket.org/annajayne/tdor/issues/6/automatically-update-the-map-shown-on-the.

[hturner]

Possible issue for 2019 hackathon.