Gcaff doesn't list why subkeys can't be used

[TheSkorm]

I was testing trying to sign keys and I didn't know why gcaff wouldn't let select some subkeys. Maybe it would be an idea to have a mouseover to say it can't sign them.

It would also be a great idea to include the revocation status and expiry of the subkeys in table. In my case, one key was revoked and in the other one key had expired.

Cheers,

mwheeler.

[frasertweedale]

Great idea. I will implement this. (Unfortunately I probably won't have time to do so for about a month).