Culture Feed Photos And Carousels Display Correctly

Environment: Dev & QA
Instagram photo posts and multi-photo carousels were being treated as videos. They showed a play control that could not play anything, and carousel posts did not show the photos they were carrying — 17 posts held between 2 and 20 images each that never appeared.
Posts are now shown according to what they actually are, so photos render as photos and every frame of a carousel is reachable.