Use a nicer theme (Clearlooks) to improve Hob's appearance in the self
hosted image and fix the progress bar not changing colour when the build
fails.
Fixes [YOCTO #2208]
(From OE-Core rev: 19a13ecceac1f48fcfe1552e88df18edd96e1bea)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>