[FIX] pos_{*}: Reprint receipt with ePOS printer

The "Reprint receipt" button was not showing if an ePOS printer was
selected.

When the pos_reprint module was installed, the "Reprint Receipt" button
was always present, even if the checkbox in pos_config was unchecked.

addons/point_of_sale/views/pos_config_view.xml

@@ -445,7 +445,7 @@
                                 </div>
                             </div>
                         </div>
-                        <div class="col-12 col-lg-6 o_setting_box" attrs="{'invisible': [('iface_print_via_proxy','=',False)]}">
+                        <div class="col-12 col-lg-6 o_setting_box pos_reprint_receipt" attrs="{'invisible': [('iface_print_via_proxy','=',False)]}">
                             <div class="o_setting_left_pane">
                                 <field name='module_pos_reprint'/>
                             </div>

addons/pos_epson_printer/views/pos_config_views.xml

@@ -20,6 +20,9 @@
                     The Epson receipt printer will be used instead of the receipt printer connected to the IoT Box.
                 </div>
             </xpath>
+            <xpath expr="//div[hasclass('pos_reprint_receipt')]" position="attributes">
+                <attribute name="attrs">{'invisible': [('iface_print_via_proxy','=',False), ('epson_printer_ip', 'in', [False, ''])]}</attribute>
+            </xpath>
         </field>
     </record>
 </odoo>

addons/pos_reprint/static/src/js/reprint.js

@@ -46,7 +46,7 @@ screens.define_action_button({
     'name': 'reprint',
     'widget': ReprintButton,
     'condition': function(){
-        return this.pos.config.iface_print_via_proxy;
+        return this.pos.config.module_pos_reprint && this.pos.proxy.printer;
     },
 });