DOCX export: handle <w:cnfStyle> paragraph property

Change-Id: I9654da23886d52968c3c95300cc7ad4f772cbb8d
DOCX export: handle <w:cnfStyle> cell property

Change-Id: I7ff2411aed76aa74c8c0d111962773e7af12a7df
DOCX export: handle <w:cnfStyle> row property

Change-Id: Ice1cf2ce078b130130c44952ec2be0f8642f21a8