it was necessary to introduce in LayoutAtoms reference to containing
LayoutNode passed by constructors, so that ConditionAtom can
access LayoutNode's name and diagram data

Change-Id: I35c9cb9061f23eb15e7a9372476530e2ead5d0dc
Reviewed-on: https://gerrit.libreoffice.org/41108Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jan Holesovsky <kendy@collabora.com>