Bug 570044: [Model2Doc] Refactore all objects referecing a path
Bug 570040: [Model2Doc] org.eclipse.papyrus.model2doc.emf.documentstructure.Image must extends DefaultFileReferenceImpl
	- Create Output Accessors for Document, DocumentStructure and Image, and create Input Accessor for Template
	- Remove the field imagePath from Image (previous model will be broken)i
	- Add the creation of missing folder for Docx generation
	- Update codes with these changes

Change-Id: If5dd989b3dcf0fe2f31d2b34bdbc71d972f4fa9f
Signed-off-by: Vincent Lorenzo <vincent.lorenzo@cea.fr>
66 files changed