…ine + Discounts in invoice report

[IMP] account_global_discount: Discounts in invoice report

Give discounts info in the invoice report.

[FIX] account_global_discount: link line taxes to discount move line

- We need to take into account invoice lines with multiple taxes, so the link should
  be m2m.
- Migration scripts for preserving the best information on existing installations.
- Tests for checking new conditions.
- Perform sanity check for not ending in an incompatible situation.
- Some refactor done on onchanges for avoiding duplicating operations.
- Adjust UI for not allowing to edit computed invoice global discounts.

- Standard procedure
- Make test more resilient

Replaced by more explicit `_convert` method.

For reducing diff, we rename the method and call it record per record.

Fixes OCA#788

[UPD] Update account_global_discount.pot

Update translation files

Updated by "Update PO files to match POT (msgmerge)" hook in Weblate.

Translation: account-invoicing-13.0/account-invoicing-13.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-13-0/account-invoicing-13-0-account_global_discount/

…ce post

Co-Authored-By: Pedro M. Baeza <pedro.baeza@tecnativa.com>

[UPD] README.rst

Currently translated at 100.0% (35 of 35 strings)

Translation: account-invoicing-13.0/account-invoicing-13.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-13-0/account-invoicing-13-0-account_global_discount/nl_NL/

[UPD] Update account_global_discount.pot

Updated by "Update PO files to match POT (msgmerge)" hook in Weblate.

Translation: account-invoicing-13.0/account-invoicing-13.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-13-0/account-invoicing-13-0-account_global_discount/

Currently translated at 100.0% (34 of 34 strings)

Translation: account-invoicing-13.0/account-invoicing-13.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-13-0/account-invoicing-13-0-account_global_discount/es/

When we set the global discount on the create method we must ensure that
the move lines are properly recomputed

Users will need a specific group to set global discounts so it's easier
to decide who's allowed to apply them.

[UPD] Update account_global_discount.pot

Update translation files

Updated by "Update PO files to match POT (msgmerge)" hook in Weblate.

Translation: account-invoicing-13.0/account-invoicing-13.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-13-0/account-invoicing-13-0-account_global_discount/

…ulti-lines from invoices when global discount is empty

…ove lines

Previously, no taxes were populated as base taxes for global discount
move lines, which means that the tax reports were incorrect.

The global discount lines + move lines has been injected other way for
avoiding inconsistencies, and the rest of the features have been adapted
according this.

A migration script is provided as well for filling taxes in existing
global discount move lines.

[UPD] Update account_global_discount.pot

[UPD] README.rst

Update translation files

Updated by "Update PO files to match POT (msgmerge)" hook in Weblate.

Translation: account-invoicing-13.0/account-invoicing-13.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-13-0/account-invoicing-13-0-account_global_discount/

For recomputing the global discounts, now we need to call another method.

TT30077

… the other standard computed fields in same method are

… by invoice's company

… report

… amount_currency and it could fail with constraint

Currently translated at 100.0% (36 of 36 strings)

Translation: account-invoicing-14.0/account-invoicing-14.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-14-0/account-invoicing-14-0-account_global_discount/it/

odoo/odoo@c9d5f06
has changed the number of arguments on the method `_recompute_tax_lines`,
so we need to adapt the overrides to such change.

Currently translated at 100.0% (35 of 35 strings)

Translation: account-invoicing-14.0/account-invoicing-14.0-account_global_discount
Translate-URL: https://translation.odoo-community.org/projects/account-invoicing-14-0/account-invoicing-14-0-account_global_discount/pt/

In a foreign currency invoice the amounts (amount_total,
amount_untaxed) are expressed in the `invoice` currency while the
accounting entry lines are expressed in the `company` currency.

The base_before_global_discounts has to be expressed in the invoice
currency as well in such invoices because the discounts need to be
computed in the same currency as the other amounts.

Also set the invoice currency_id on the tax line so that it doesn't
default to the company currency, and convert the discount journal entry
amount to the company currnecy.

- Depending on the installed set of modules, the company currency may
  be USD or EUR. If the second case, these tests will fail, so we make
  sure that the company currency is USD for our tests, doing the change
  by SQL, as there's a Python constraint that prevents it.

Not needed in v17 due to: odoo/odoo#107113.

…issues on big database installation