bserver: if usage exceeds 20MB, flush immediately
bserver: if usage exceeds 20MB, flush immediately

nits

nits

bserver: flush quota quickly if the user has accumulated lots of bytes

bserver: address pr comments

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