... shapes define their own attributes.

Partially revert commit c2d13042

Change-Id: Iee98003f4ff63575a28818b091ab77431337192f
Reviewed-on: https://gerrit.libreoffice.org/23571Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Xisco Faulí <anistenis@gmail.com>