[IMP] account: display user message to configure the tax-cash-basis-journal.

addons/account/views/res_config_view.xml

@@ -138,6 +138,9 @@
                             <div>
                                 <field name="module_account_tax_cash_basis" class="oe_inline"/>
                                 <label for="module_account_tax_cash_basis" />
+                                <p id="journal_config_message" attrs="{'invisible': [('module_account_tax_cash_basis','=',False)]}">
+                                    Once this module is installed, you have to configure Tax Cash Basis Journal.
+                                </p>
                             </div>
                         </div>
                     </group>

addons/account_tax_cash_basis/views/tax_cash_basis_view.xml

@@ -19,7 +19,7 @@
             <field name="inherit_id" ref="account.view_account_config_settings"/>
             <field name="model">account.config.settings</field>
             <field name="arch" type="xml">
-                <xpath expr="//div[@name='account_config']/div[last()]" position="after">
+                <xpath expr="//p[@id='journal_config_message']" position="replace">
                     <div>
                         <label for="tax_cash_basis_journal_id"/>
                         <field name="tax_cash_basis_journal_id" class="oe_inline"/>