Set begining folders FileChooserDialog for the select images and
some local directory configurations. That may make user feel more
convenient.
(Bitbake rev: 047ad35c0c869883509557aeb982e0b784ad2e71)
Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>