Option to pull information about depicted object from Commons / Wikidata

[lgelauff]

One of the international jury members requested a feature to show information about the depicted object on the photo (in our case, a monument) to be able to appreciate the photo better. Given the extra time this would require to process information, this would also only be relevant in the very last phase.

This is a bit of an edge case (not all juries will want this to be visible) and highly nontrivial because it is not obvious where to pull such information from. But some options:

• If the photo is connected to Wikidata, pull information from there
• pull just the Wikipedia pages where the image is being used, and display those titles with a link. The assumption is that such pages will be relevant to the topic, or contain more context.
• allow the organizer to manually add context

Due to the limited use case, I think it would be totally acceptable to limit this feature to rounds with less than (e.g.) 100 pictures.

I think this should be low priority, but i'm posting here in case someone likes to pick it up.