Gopass sync should give more metadata for importing keys

[falschparker82]

Steps to reproduce: gopass sync with new public key added to any repository

Issue: gopass asks me out of the blue if I want to import a new key, but I don't even know who that is (email, fingerprint, etc.)

Answering yes is a gamble: I don't know who I'm currently adding and I'm trusting my peers
Answering no is probably also not what I want: In 99% of all cases, I do want to add that person too (if I finally know who ;-) ), also otherwise encryption will fail.

Fix ideas: Either more metadata right away (at least email!) or new option [d] for details...

[dominikschulz]

Yes, indeed. I noticed this as well but failed to raise an issue so far. Thanks for reporting.

Should be possible with https://godoc.org/golang.org/x/crypto/openpgp#ReadArmoredKeyRing