Include all identifier from python-stdnum
From https://discuss.tryton.org/t/solution-to-manage-tax-identifier-types/723
We should include all possible number that maybe considered as VAT (and even more if we receive the need).
From https://discuss.tryton.org/t/solution-to-manage-tax-identifier-types/723
We should include all possible number that maybe considered as VAT (and even more if we receive the need).