Visual file picker#335

Preview images in the file picker are rather tiny, often too tiny to select a particular image out of rather similar images. It would be great if we could have a file picker with larger (or even configurable) image sizes like the one custom one seen in the LOWA video.

Supporting our regular cards and cardlets would be sufficient?

Yes, using cards or cardlets as a basis would definitely be a huge improvement (was planning to set something up based on that), although we have some other improvement suggestions for the files picker here, e.g. #332, #55.

Any progress here? Or any other resource I could look into?