…ete/interface-doc into de-rc-returnable

* 'de-rc-returnable' of https://github.com/christain-rogobete/interface-doc: (59 commits)
  Update appendix-de-kassensichv.md
  add vouchers to toc for DE
  add voucher postman collection for DE
  update DE voucher examples
  Update reference-tables.md
  Updated middleware 1.3.1 release notes
  Update data-structures.md
  Update data-structures.md
  Update data-structures.md
  Update data-structures.md
  Added ManagerId as ftReceiptCaseDataField
  Reverse Forderungsauflösung / Forderungsentstehung
  Update type-of-payment-ftpayitemcase.md
  Correction of a typo
  remove field ActionMoment from de-data-structures
  update BON_START in DSFinV-k generation
  Update for French law
  drop double content
  Added toc.md
  Middleware 1.3.1 release notes
  ...