Merge branch 'develop' of https://github.com/Dolibarr/dolibarr.git into develop

doc/images/README

htdocs/langs/nl_BE/main.lang

htdocs/langs/nl_BE/trips.lang

htdocs/langs/pt_PT/agenda.lang

htdocs/langs/pt_PT/banks.lang

htdocs/langs/pt_PT/bills.lang

htdocs/langs/pt_PT/bookmarks.lang

htdocs/langs/pt_PT/boxes.lang

htdocs/langs/pt_PT/categories.lang

htdocs/langs/pt_PT/commercial.lang

htdocs/langs/pt_PT/companies.lang

htdocs/langs/pt_PT/compta.lang

htdocs/langs/pt_PT/contracts.lang

htdocs/langs/pt_PT/deliveries.lang

htdocs/langs/pt_PT/donations.lang

htdocs/langs/pt_PT/ecm.lang

htdocs/langs/pt_PT/errors.lang

htdocs/langs/pt_PT/exports.lang

htdocs/langs/pt_PT/interventions.lang

htdocs/langs/pt_PT/mails.lang