Add support in the 'makeRedline' function for 'formatting properties'

This patch adds support in the 'makeRedline' function to allow it to
receive from the importer the format changes that were done when
'Track Changes' was turned on.
(Following commit will be for the importer code)

Reviewed on:
	https://gerrit.libreoffice.org/6902

Change-Id: Ieb06dcdf15fd39d0ad928795f90146dc2f060e77