Traduction de library/dataclasses.po (#1687)

* Traduction de library/dataclasses.po

* Suggestions de Christophe Nanteuil

Co-authored-by: Christophe Nanteuil <35002064+christopheNan@users.noreply.github.com>

* powrap library/dataclasses.po

* Petite clarification

* Correction d'une coquille

Co-authored-by: Christophe Nanteuil <35002064+christopheNan@users.noreply.github.com>

Author: jeanas