Images attached to GraceDb pages are not cached
Created January 6, 2017 by Leo Singer. Copied from redmine (https://bugs.ligo.org/redmine/issues/4984)
I noticed that none of the images attached to a GraceDb are cached. Since they are versioned and have unique and permanent filenames, there is no reason not to let the user's browser cache them. This would reduce bandwidth by a lot for frequently viewed events. For example, the event page for GW170104 pulls down almost 40 MB of resources! Most of those should be cached.