Add getTargetDAO to ManyToManyRelationship interface.
Add getTargetDAO to ManyToManyRelationship interface.

Make ManyToManyRelationshipImpl fully implement the interface.

jacksonic/vjlofvhjfgm,foam-framework/foam2,jacksonic/vjlofvhjfgm,foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,foam-framework/foam2,foam-framework/foam2