Following ESC decision, uno commands InsertRows / InsertColumns
must be added to the current one InsertRowsBefore / InsertColumnsBefore
and InsertRowsAfter / InsertColumnsAfter.
This will guarantee ascending compatibility while making more explicit
the behaviour thanks to the new commands.

Change-Id: I31964e3bdfa63b9447edb794fe233e2665651142
Reviewed-on: https://gerrit.libreoffice.org/16098Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jan Holesovsky <kendy@collabora.com>