[FIX] account: amount currency in journal items list view

In 8.0, the amount currency field was displayed
in the journal items list view
when choosing, thanks to the `quick add` widget,
a journal with a currency set.
Otherwise, if the journal had no currency set,
the column was not displayed.

It was done thanks to the key
"currency" passed in the context.

From 9.0, the `quick add` is no longer used,
and, due to that, the amount currency field
was no longer displayed in the journal items
list  view at all, despite if the journal
had a currency set or not.

In technical words, `currency` was
no longer passed in the context,
making the invisibility property
set with
`invisible="not context.get('currency',False)"`
useless.

As this widget is no longer used, there
is no other choice than either
always display the column, either never.

We choose to display it only if you have
the multi-currency group (as this is the case
in the journal item form view)

We also take the opportunity to move the column
next to the debit & credit column, this is more
meaningful.

opw-676059

addons/account/views/account_view.xml

@@ -1098,9 +1098,9 @@
                     <field name="reconciled"/>
                     <field name="debit" sum="Total Debit"/>
                     <field name="credit" sum="Total Credit"/>
+                    <field name="amount_currency" readonly="True" groups="base.group_multi_currency"/>
+                    <field name="currency_id" readonly="True" invisible="1" />
                     <field name="date_maturity"/>
-                    <field name="amount_currency" readonly="True" invisible="not context.get('currency',False)"/>
-                    <field name="currency_id" readonly="True" invisible="not context.get('currency',False)" />
                     <field name="company_currency_id" invisible="1"/>
                     <field name="company_id" invisible="1"/>
                 </tree>