The payload changes from: "x, y, width, height"
to: "x, y, width, height, column, row".
This feature is exploited by online starting from the 3.0 release.
This change is compatible with older online release:
the column, row coordinates are just ignored.

Change-Id: I7f8c0e3685c57ff20520ee068b215037f6137389
Reviewed-on: https://gerrit.libreoffice.org/46528Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Marco Cecchetti <mrcekets@gmail.com>