This migration has been made from the v14 branch akretion/14-brexit-simplification-and-type-on-fp and the changes of v15 has been re-integrated.
As discussed on https://github.com/OCA/intrastat-extrastat/issues/194
the intrastat transaction codes are now integrated in the module intrastat_product
The default value for transaction_id depending on the move_type of the
invoice have been dropped on fiscal position and company: Odoo sets 11
when fiscal position is B2B and 12 when fiscal position is B2C.
As a consequence: intrastat.transaction: company_id = False by default
Use textwrap for name_get() of intrastat.transaction
partner_id on computation line is not a related field any more: it allows
to auto-fill VAT from partner_id when creating a line manually.
computation and declaration line tree view: display transaction code
instead of transaction_id to save space
