Because of image prefetch of browsers the <img src="{0}"> templates cause
unwanted /{0} requests to the webserver. Templates are changed to use a
data-src attribute.
it really needs to be re-worked for bootstrap but in any event the words "show" and "don't show" make a mess of it. We should probably just use icons (with a bit of padding) that people can select with a touchscreen and reformat the box accordingly.