dock: restart awesome after reconfiguring

It is likely that awesome missed the second xrandr event.

bin/input-event

@@ -42,6 +42,7 @@ case "$event,$use,$(uname -n),$name" in
         if xrandr | grep '^DP. connected'; then
             xrandr --output eDP1 --off --output DP3 --auto --primary
             xrandr --output DP4 --auto --right-of DP3 --dpi 96
+            echo 'awesome.restart()' | awesome-client
         fi
         xkb default
         ;;