If the date_row is between two messages, it tells you when the message
below was sent, but not when the message above was sent--for that you'd
either have to click on a message or keep scrolling up. This is especially
annoying when there are sometimes gap days on a particular stream (you shouldn't
assume that the message above is simply from the previous day).
This adds the date of the previous message (the time above) to the date_row.
(imported from commit 4c6c956118ae09fedca042e797a6029fdd26e00c)
In a few cases the $.each was doing something imperatively that was
terser and easier to understand by using a different Underscore method,
so a few of these I rewrote.
Some code was using the fact that jQuery sets `this` in the callback to
be the item; I rewrote those to use an explicit parameter.
Some code was using $(some selector).each(callback). I converted these
to _.each($(some selector), callback).
One function, ui.process_condensing, was written to be a jQuery $.each
callback despite being in a totally different module from code using it.
I noticed this and updated the function's args.
(imported from commit bf5922a35f257c168cc09ec1d077415d6ef19a03)
Allen Rabinovich
acrefoot
Scott Feeney
Tim Abbott