Update the css file for the layer import.
This changes will improve the UI for the
task.
[YOCO #9911]
(Bitbake rev: a41d0400478186c983334d8f83780639e7361c91)
Signed-off-by: Belen Barros Pena <belen.barros.pena@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>