Comment 8 for bug 385136

So, we could do the initial work for this as part of the 3-0 redesign (ie. not including the owner setting run-time dependencies etc. or any other change requiring db-changes).

One question I had was whether we'd also need to display the keys for ppa dependencies - Julian had an idea that we could simply include the id/fingerprint in a comment below each the sources.list entry - that would also be useful when removing entries later (ie. to know which keys to remove as well).