Mise à jour des tables facture_fourn_det et product_fournisseur_price. Ajout d'un champ pour la gestion de la TVA NPR
TVA NPR : add info_bits property in class FactureFournisseur
TVA NPR : add fourn_tva_npr property in class ProductFournisseur
TVA NP : update price calculation
TVA NPR: add parameter in function call. Accept * tva
TVA NPR : deduplicate line. Remove tva npr from journal lines
TVA NPR : set function get_default_npr
TVA NPR : can use * in tva when set supplier price
TVA NPR : Change field name recuperableonly to info_bits
Work on new menu managers - step x
try to fix :supplier invoice numbering
Another step for menu management rewriting
Merge pull request #792 from grandoc/develop

try to fix :supplier invoice numbering
Fix: Restore lost commit.
Merge pull request #793 from jfefe/extrafields

Task #784 : display calendar into data type extrafields / new methods to manage extrafields
Merge branch 'develop' of git@github.com:Dolibarr/dolibarr.git into develop
Fix: Default background if css3 not used
New: Add option INVOICE_CAN_NEVER_BE_REMOVED
New: Add option INVOICE_CAN_NEVER_BE_REMOVED
Fix: Better error management