tlf_journal: save uid/key in struct fields
tlf_journal: save uid/key in struct fields

The key is now required for showing the journal filename status.

Issue: KBFS-1609

keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client