More work on deleting profiles/images; when deleting an entire profile
all at once, we want to delete the naked images so that all versions of the image get deleted. Here is where things get tricky; our only record of where the image lives and hat versions exist is at the cluster or in the source. But if the source is not using a version then we have no record of it and do not know what cluster to delete from. This is problem on the Cloudlab portal not the Emulab portal, we can handle that (although I do not yet). Still working on this, but its a little better and of course images can be deleted on the image management page which asks for a complete list of all images.
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