Merge branch '4.0' of git@github.com:Dolibarr/dolibarr.git into 4.0

htdocs/core/modules/facture/doc/pdf_crabe.modules.php

htdocs/install/mysql/migration/3.9.0-4.0.0.sql

htdocs/install/mysql/tables/llx_user.sql

htdocs/supplier_proposal/card.php

htdocs/supplier_proposal/class/supplier_proposal.class.php

scripts/product/migrate_picture_path.php