Rather than a drop down dialog, which could present users with images
that may not run on their hardware, allow selection of Raspberry Pi as a
first stage. If users adopt this feature, they are presented with a
subset of images that we know will actually run on their hardware.
This is achieved by leveraging @maxnet's excellent OS filtering scheme.
Future work will attach image and description support to this OS list.
Tests if repository json files conform to the json schema.
If all resources (images/icons/website URLs) they mention actually
exists.
And can also test writing images and the FAT modification code.
