The problem was that the scrollable required that the mouse be over the
story river itself in order to scroll it with the wheel. If we fallback
to scrolling the story by scrolling the browser body then we are able
to scroll even if the mouse is over the sidebar.
Now we get decent visual indication of sync errors, for instance. Still
work to do to coalesce alerts so that the screen doesn’t fill up with
them after an interval. And probably we should add a button to clear
all alerts.
