Remove project datasets when we remove a project
I got this:
2 boss.emulab.net> showlease -a
Could not find group JPF-Doop/JPF-Doop!
Could not find group Maline/Maline!
Could not find group JPF-Doop/JPF-Doop!
Could not find group Maline/Maline!
Could not find group Clover/Clover!
Could not find group Clover/Clover!
...
and those, I believe are old projects that Zvonimir got rid of.