Belgian intrastat report

Belgian Intrastat report in 1 module for V8.0
The declaration wizard requires at least *read* access to these models, which the accounting manager may not have. Double-check (test with a regular user, not admin) maybe some SUPERUSER_ID access is needed:
- stock.incoterms
- report.intrastat.code
- account.invoice
- account.invoice.line
- stock.location
- product.product
- purchase.order
- l10n_be_intrastat_declaration.regions
- sale.order
- l10n_be_intrastat_declaration.transport_mode
- stock.warehouse