msglist: Refresh msglist recipient-header date text periodically to respond to current-date change

[chrisbobbe]

Untested, but from reading code, it seems like if it's near midnight and you're looking at a recipient header that says "TODAY", it won't update to "YESTERDAY" after midnight unless something unrelated to the clock causes it to update. We can fix this by running a check every minute or so, to refresh the current-time value that controls that text.

(Same for the transition from "YESTERDAY" to an absolute date.)

Related issues

• profile: Keep "current" local time current #293

[gnprice]

Yeah, agreed.

This is a bug that web has even today in a much more conspicuous place, namely "Recent conversations" — I regularly get fooled by a conversation being shown there as "Just now", when in reality it was like 20 minutes ago and that just happens to be the last time anything exogenously caused the table to get updated. So I agree this is a post-launch issue.