#297 DOCX:Header - Wrapping style not retained.

[Pradeep Nemadi]

If a VML shape is present in a header in DOCX and its wrapping style is "In front of text", suppose we do an internal conversion DOCX->DOC->ODT, the wrapping style for the VML shape in ODT is "behind the text". Our implementation for the odf-converter is done based on this internal conversion result.