[MIG] account_financial_report: Finalize migration to 12.0

* Move back to CSS and FIX

  NameError: variable @odoo-view-background-color is undefined in - on line 99, column 23:
  98 .o_account_financial_reports_page {
  99     background-color: @odoo-view-background-color;
  100     color: @odoo-main-text-color;

* Porting: parent_left does not exist anymore. Using parent_path + account code to sort report lines

* FIX js error with date object not converted to string while clicking on initial balance amount
  See https://user-images.githubusercontent.com/1033131/58337566-5d525c80-7e46-11e9-913a-3c3e0115fb3e.gif

* IMP style and metadata

* FIX tests about new date format and partner_id computed field of account.move

* FIX errors like

  2019-06-03 16:11:51,406 17857 ERROR dev_12_account_financial_report odoo.sql_db: bad query: b"\nDELETE FROM 'report_vat_report_tax'\nWHERE COALESCE(\n    write_date, create_date, (now() at time zone 'UTC'))::timestamp\n    < ((now() at time zone 'UTC') - interval '3600.0 seconds')\n"
  ERROR: syntax error at or near "'report_vat_report_tax'"
  LINE 2: DELETE FROM 'report_vat_report_tax'
                    ^
* IMP translation template and IMP Italian translation

* Remove useless comments
* Use AsIs to avoid SQL injection
* Use fields.Date methods
* Remove useless data from tests
* Improve comments
* Fix wizard.multi.charts.accounts
* Move _get_partner_ids_domain to abstract wizard
* Refactor default partners in wizard to use recordsets
* Improve js style

account_financial_report/tests/test_trial_balance.py

@@ -2,7 +2,6 @@
 # Copyright 2016 Camptocamp SA
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
-import time
 from datetime import date
 from odoo.tests import common
 from . import abstract_test_foreign_currency as a_t_f_c
@@ -131,7 +130,6 @@ class TestTrialBalanceReport(common.TransactionCase):
         partner = self.env.ref('base.res_partner_12')
         move_vals = {
             'journal_id': journal.id,
-            'partner_id': partner.id,
             'name': move_name,
             'date': date,
             'line_ids': [
@@ -139,26 +137,31 @@ class TestTrialBalanceReport(common.TransactionCase):
                     'name': move_name,
                     'debit': receivable_debit,
                     'credit': receivable_credit,
+                    'partner_id': partner.id,
                     'account_id': self.account100.id}),
                 (0, 0, {
                     'name': move_name,
                     'debit': income_debit,
                     'credit': income_credit,
+                    'partner_id': partner.id,
                     'account_id': self.account200.id}),
                 (0, 0, {
                     'name': move_name,
                     'debit': unaffected_debit,
                     'credit': unaffected_credit,
+                    'partner_id': partner.id,
                     'account_id': self.account110.id}),
                 (0, 0, {
                     'name': move_name,
                     'debit': receivable_debit,
                     'credit': receivable_credit,
+                    'partner_id': partner.id,
                     'account_id': self.account300.id}),
                 (0, 0, {
                     'name': move_name,
                     'debit': receivable_credit,
                     'credit': receivable_debit,
+                    'partner_id': partner.id,
                     'account_id': self.account301.id})
                 ]}
         move = self.env['account.move'].create(move_vals)