[IMP]l10n_it_ricevute_bancarie: improvements for is_unsolved field

- Changed placement to see the label better
- When a invoice is duplicated the field is set to
  false. This behavior that was not present
  before this commit

l10n_it_riba/models/account.py

@@ -347,6 +347,7 @@ def copy(self, default=None):
                 invoice._sync_dynamic_lines(
                     container={"records": invoice, "self": invoice}
                 )
+            invoice.is_unsolved = False
         return invoice
 
     def get_due_cost_line_ids(self):

l10n_it_riba/views/account_view.xml

@@ -149,6 +149,9 @@
                     attrs="{'invisible': ['|',('is_riba_payment','=', False),('move_type','!=','out_invoice')], 'required': ['&',('is_riba_payment','=', True),('move_type','=', 'out_invoice')]}"
                     domain="[('partner_id','=', commercial_partner_id)]"
                 />
+            </xpath>
+
+            <xpath expr="//label[@for='invoice_payment_term_id']" position="before">
                 <field
                     name="riba_supplier_company_bank_id"
                     attrs="{