[FIX] account: Name of an account.payment

Steps to reproduce the bug:

- Create a bank statement with a blank name
- Reconcile any line statement with an invoice
- Review the payment that was made for this statement

Bug:

The payment had no name.

opw:182754

addons/account/i18n/account.pot

@@ -1970,6 +1970,12 @@ msgstr ""
 msgid "Bank Statement"
 msgstr ""
 
+#. module: account
+#: code:addons/account/models/account_bank_statement.py:935
+#, python-format
+msgid "Bank Statement %s"
+msgstr ""
+
 #. module: account
 #: model:ir.model,name:account.model_account_bank_statement_line
 msgid "Bank Statement Line"

addons/account/models/account_bank_statement.py

@@ -932,7 +932,7 @@ class AccountBankStatementLine(models.Model):
                     'currency_id': currency.id,
                     'amount': abs(total),
                     'communication': self._get_communication(payment_methods[0] if payment_methods else False),
-                    'name': self.statement_id.name,
+                    'name': self.statement_id.name or _("Bank Statement %s") %  self.date,
                 })
 
             # Complete dicts to create both counterpart move lines and write-offs