tdf#56467 / tdf#88117: SVG export further improved
tdf#56467 / tdf#88117: SVG export further improved

omitting the clip-path from the <svg> element and keeping it only in
the slides enables rendering of exported selection in viewers like
firefox and inkscape

Change-Id: If296a78a3f948728e8b2ec257849be129bec5d92
Reviewed-on: https://gerrit.libreoffice.org/15155
Tested-by: Jenkins <5a4fe08359c7f97380e408c717ef42c86939cd86@libreoffice.org>
Reviewed-by: Thorsten Behrens <521e46c8b7e73b40056988e8e9138c484f84490c@CIB.de>

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core