There might be multiple screens with visible windows. When closing the
last window of the current screen, try to focus them as well.
If no window has focus and yet some windows are visible (e.g. on another
screen), awesome misbehaves: it uses sloppy keyboard focus (as is the X11
default), but doesn't refresh their border colors or tasklists etc.
Signed-off-by: Tomi Belan <tomi.belan@gmail.com>
Signed-off-by: Julien Danjou <julien@danjou.info>