Add visual cue for widgets with dead comms

Part of the new widget feature set where widgets can exist on the page while being stale, i.e. page refresh, kernel restart, etc... 
Yes, I think that makes sense...

On Tue, Dec 16, 2014 at 7:57 AM, Jonathan Frederic <notifications@github.com
> wrote:
>
> In IPython/html/static/widgets/less/widgets.less
> <https://github.com/ipython/ipython/pull/7227#discussion-diff-21908026>:
>
> > @@ -26,6 +26,18 @@
> >          .box-flex2();
> >          .align-start();
> >      }
> > +
> > +    &.connection-problems .prompt:after {
> > +        content: '\f127';
> > +        font-family: 'FontAwesome';
> > +        color: @brand-danger;
> > +        padding: 4px;
> > +        position: relative;
> > +        border-radius: 2px;
>
> Yeah, we decided on using 2, because he was planning on changing
> @border-radius-base to 2. @ellisonbg <https://github.com/ellisonbg>
> should this remain as 2? Or should I use @border-radius-base like @Carreau
> <https://github.com/Carreau> suggests and then open a separate PR to set
> @border-radius-base to 2?
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/ipython/ipython/pull/7227/files#r21908026>.
>


-- 
Brian E. Granger
Cal Poly State University, San Luis Obispo
@ellisonbg on Twitter and GitHub
bgranger@calpoly.edu and ellisonbg@gmail.com