Allow for selected file information to be displayed next to thumbnails

[MichaelNMaggs]

In a ranking round the only way to get any information about each image is to click on the thumbnail to bring up the information screen. It would be helpful for basic information such as image size, pixel count and file name to be available for display next to the thumbnails, at least for the larger thumbnails.

It's often useful to note a particular file that you want to check out in more detail later, which at the moment can't be done without going into the file individually, as neither the filename nor the file number are shown with the thumbnails. Being able to flag thumbnails would help, and there's a separate issue for that.

(Issue initially submitted by email on 23/3/07, but I can't see it anywhere here)