I'm sorry for not sending a specification earlier, Lodewijk, but we're still dealing with deadlines here. You did a great job, though, that should be about it.
In the meantime, we have set up this framework: - random sort images by juri elements (like WM-DE did) - allow the juri element to browse his/her set of images with a "bucket" approach: images start at bucket 1 and the user is allowed to promote the image to bucket 2 (+ sign) or mark it as uninteresting (- sign will send it to bucket 0).
This approach is very simple, and allows the juri element to approach the task in different occasions - he will be led to bucket 1, where all "non processed" images are - otherwise they should be at bucket 0 or 2.
In the end, it's expected that bucket 2 has a minimum of photos to present in the juri meeting.
I hope I'm making myself clear. Here's an example for you to test (all images from Portugal):
http://juri.wikilovesmonuments.org.pt/5d9734fe-ee20-11e0-a298-003048f0198a
Use the + or - sign to promote/demote images.
It's possible this platform will be provided a filtering mechanism (e.g. demote images below specified resolution).
I'm not able to enhance it though. I can share the code or you just browse from wlm.org.pt.