kbfsedits: address tlf_history review feedback from jzila
kbfsedits: address tlf_history review feedback from jzila

Issue: #1626

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