[IMP] print, print_docsaway : add default provider on wizard, PO and config
[IMP] print : add security and ir_cron to process queue order
[IMP] print, prin_docsaway : this is better now :)
[IMP] print, print_docsaway : put the pdf content into an ir_attachment
[IMP] print : optimization in the queue treatment
[IMP] print : refact readonly property for the fields
[IMP] print, print_docsaway : improve plein de trucs
[ADD] print_sale : add new module to print SO