Allow for retraction before moderation

[topher1kenobe]

In the list of unmoderated images, make a link to allow the submitter to retract (delete) it. This would only exist for unmoderated photos.

[coffee2code]

A reasonable request, though I wonder how often this would arise, especially since we don't show what the submitted picture is after the fact (see #6121 for why). Were #6121 to have been implemented this would make better sense. Otherwise, it seems the most likely scenario would be someone selected a photo, uploaded it, then immediately realized they just uploaded something they didn't mean to.

I would have concerns about its potential abuse: a user who updates a photo, retracts it, and then just keeps repeating the process. There are bandwidth and computational resources to consider (unlikely as the case may be).

The simplest thing would be to add clear guidance for contributors to reach out via Slack or email if they've made a submission in error or need to update the description, etc.

We could allow the user to flag an unmoderated submission of theirs for retraction. (The photo would continue to occupy a moderation slot until a mod, who will be clearly alerted to the contributor's retraction request, removes the submission.) This just seems like a lot of unnecessary effort all around.

If we implemented immediate retraction, we'd need to add limits:

• Limit each contributor to a certain number of retractions within a 24 hour period (i.e. 1 retraction).
• And/or limiting contributors to a certain number of overall retractions, with one freebie to start and more earned per every N submissions (e.g. 1 retraction per every 50 approvals; so a user with 200 approvals would have an allocation of 5 retractions, after which they would need more approvals in order to do more retractions).