Changed some options from picture/graphics to image

Change-Id: If86fae691d4926c896c6d1da1863cd8397a38718
Reviewed-on: https://gerrit.libreoffice.org/11429
Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Tested-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>