Cleanup keybase query a bit

Remove ctime and the cached key, making the query for the entire user
object unnecessary. This should only be done when the user decides to
import the key. Hopefully keybase.io can provide all info necessary in
the search results.
Add github, twitter, website info for keybase keys

The very point of keybase.io is the identification and proven link
to those identities, so it should be nice to have them.
The display is a bit basic still, as it just adds them as userIds,
I'm sure this can be prettified, perhaps with logos?
Rename fingerPrint to fingerprint