Display locally stored remote GIFs as thumbnails
Display locally stored remote GIFs as thumbnails

Many newspapers seem to use animated GIFs as catchy header images, which
we would fail to show from oEmbed/OpenGraph fetching since they would
want us to "use File as Thumbnail", but the only place the image filename
was stored was in File_thumbnail, for the thumbnail of that file_id which
had a URL set.

chimo/social,chimo/social,chimo/social