After discussion, we decided that the red color is too distinct
and does not convey the idea of "almost offline".
This changes the new "unavailable" status circle's color from dark
red to grey, the same color used by the "offline" status circle.
Fixes#11589.
Adds SCSS style for the "unavailable" user status and enables its
usage in `buddy_data.js`.
The style is a red circle with a horizontal line. The values might
look a bit 'magic' but they were considered carefully ` height` of
1px was too thin, 2px was too thick, thus 1.5px was chosen.
We now have a function get_user_circle_class
that returns one of these values:
"user_circle_green"
"user_circle_orange"
"user_circle_empty"
And we put that in the templates.
And then CSS renders the circle of the appropriate
color.
The unit tests now explicitly capture whether
we are rendering the correct kind of circle.
This is a pure code move.
We want to use user circles in the left sidebar,
so this code will no longer belong in
right-sidebar.scss.
This code is just related to drawing the circles.
We can still position in size in other CSS files
(with more context-specific selectors).
Boris Yankov
Steve Howell