invoices list

invoice tables.

Fixed: Solve conflict between ->iban and ->iban_prefix.

This a not so new French type of company: Entreprise Individuelle à
Responsabilité Limitée (EIRL).
Migration script also added.

increase fieds size of ref supplier (order and bill)

increase ref fields size (like customers facture)

extend ref fields size (like for customer commande)

increase size of ref supplier (some supplier are very long ref...)

notifications

to avoid future bugs.

New: Add missing trigger PROPAL_CLASSIFYBILLED.

EMail use now language of target contact.
Can also define a fixed email for notifications.
Better error management