Add a notification after 'refresh atlas' is done

Very specific to curators, but on the atlases home page, after clicking the Refresh Atlas hyperlink, can you please add some kind of a notification - popup box, text on the screen etc after the process involved in refreshing an atlas is complete.

Right now you have no way of knowing if anything was done, I have no idea if should it fail or not run for some reason there would be any notification etc.

@loarie, thoughts?