New feature: display of image/picture

[jbelien]

Hello @gislars ,

Just wanted to let you know that there is now the image/picture displayed in the popup.
It uses Wikidata P18 (image) property: https://www.wikidata.org/wiki/Property:P18

Next time you run composer update-data -- --city=berlin that field will be added to the GeoJSON files and images will be displayed.

Let me know if you have any question!