revu doesn't know when a package has been removed after the latest debian sync

[Javier Uruen Val]

When a package foo has been removed from the archive by a debian sync, revu is not aware of that. If you try upload the package to revu is listed as "updated packaged" even though that package doesn't exist in the current release.

This came up when I tried to upload libapache-authcookie-perl for intrepid. The package was removed by the debian sync, so it doesn't exist in intrepid right now, but it's showed up by revu as "updated packaged".

I'm not sure if this is the expected workflow.