handle direct formatting for numbering in .docx (bnc#875717)

Change-Id: I3ed0f926e79f3878c5702c2becae97d99d00e201
(cherry picked from commit c2ac2ced0d51200a62f7436144f0d89cfcd15eed)
Signed-off-by: Andras Timar <andras.timar@collabora.com>