Updated docs/openbox

  * openbox/autostart.org: updated, returned start of
    'gnome-settings-daemon', earlier it was started in openbox by means
    of 'autostart', but now it starts only in GNOME;
  * (TOP) openbox/autostart: regenerated, tangled from Org document.

Signed-off-by: Vladimir Lomov <lomov.vl@gmail.com>