The missing convertMm100ToTwip() calls mispositioned the line shapes
inside the groupshape in case of using drawingML inside DOCX files.

(cherry picked from commit 11129d89)

Conflicts:
	sw/qa/extras/ooxmlimport/ooxmlimport.cxx

Change-Id: I0c9d652de43d779f9073a8bfe22866ce4f31d0fa
Reviewed-on: https://gerrit.libreoffice.org/19946Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>