Per-MUC / Per-Contact settings for automatic image preview
Please note by far the quickest way to get a new feature is to file a Merge Request.
Description of the new feature
I think there should be a setting that allows the user to disable and enable automatic image previews for each user or MUC that overrides the global setting. I have plenty of MUCs that gajim considers 'public' that I do not mind seeing automatic previews from, but still generally would prefer the click-to-preview way of doing things.