Invoice mgt: last invoice number not stored any longer in the profile
Invoice mgt: getting invoice form data
Invoice mgt: getting invoice form data (UI)
Invoice mgt: async generation of the invoice, but having its ID right away
Invoice mgt: integration test for the generation of an invoice - wip
Invoice mgt: error management - wip
Invoice mgt: error management for the invoices
Invoice mgt: download of the invoice
Invoice mgt: rollback script for the database
Invoice mgt: UI to get an invoice by ID + error message(s) in the UI
Invoice mgt: UI using POST ot launch the generation of an invoice
Invoice mgt: "generating..." indicator
Invoice mgt: link to the management of invoices