Scratch Flatpak

Re-generating the sources

Run update-package-info.py to read the scratch-desktop Git tag from the manifest and generate the latest asset sources & download the needed package*.json files.
Run npm install inside of scratch-desktop/node_modules/scratch-gui (which is written by update-package-info.py) to create the needed package-lock.json.
Run:

flatpak-node-generator.py npm scratch-desktop/package-lock.json -P -R scratch-*/package-lock.json -s

afterwards to regenerate the npm package sources.