When using gallery view, the order of the images in the gallery is the same as the order of the images in the article
- Image order is different from the article
- Not all images that appear in the article are always shown in gallery (see merged T124239)
- Images that do not appear in the article are shown in the gallery (see video of bug at https://youtu.be/m_j-pBWHXIs occurring on the Tropical Storm Brenda 1960 article)
Add image ordering to apps content service, and use it in image gallery, so that images are always in order in the gallery.
Probably need to break up division of videos and images in the media object.