Get more result on categories and products import
To poputalte databases at first time we may import from csv files. We build these csv files manualy, outside pasteque. We may have more than one product with the same reference. I think we should be more verbose and print which references has been created and modified; Usualy at first import we do not modify any reference; If we modify a reference that mean thre is more than on line with the same reference.