I find it helpful (especially when going through a long list of
results) to know how far back in time I'm looking.
A note on the timestamp being used: it's the search index
timestamp. Using the card or comment `updated_at` is fraught because
we do so much touching of records (e.g., comment is touched when a
reaction is added; card is touched when a comment is added). Let's
display the search record's `created_at`, which is the ordering used
for the overall results.
Mike Dalessio
642506e79e