Making the data widget render its raw JSON (introduced in 683ec33004) was a bad idea as it messes up the innerwiki use of the data widget. Instead we use the testcase widget with a special template to render the raw JSON of the payload of a testcase, thus giving us a way to test the data widget
This is the beginnings of a new core plugin to add geospatial capabilities, building on the JSON operators that we now have in the core. It uses the libraries leaflet.js for mapping and turf.js for geospatial calculations.
Global variables access within attributes will automatically trigger a refresh if the attribute text changes, but that wasn't happening for transclusions.
