reduce noise on daemon console

Summary:
this suppresses displaying entries that have not been in the running
state for more than 3 days.

note: We should probably kill off these dead rows similar
to the code at the top of the loop, but without checking to see if we're
the same host and the item is still live, or have some other cruft removal
job to effect the same.

Test Plan: load /daemon/ and rejoice that there are fewer crufty rows.

Reviewers: vrana, nh

Reviewed By: nh

CC: aran, epriestley

Differential Revision: https://secure.phabricator.com/D5299