Fix broken photo links in comments and journal pages

the bug report for taxon photos already exists: https://forum.inaturalist.org/t/representative-pictures-not-showing-on-all-species-pages/25401.

it doesn’t include the item about journal pages though. so i’m not sure how the folks who need to know would prefer it organized, but this could be consolidated with that bug report, or maybe a separate bug report could be made for the journal issue.