allow to hide tax rows in invoice templates if vat rate is zero (#3484)

templates/invoice/renderer/default.html.twig

@@ -98,6 +98,7 @@
             {% endfor %}
             </tbody>
             <tfoot>
+                {% if model.calculator.tax > 0 or not model.isHideZeroTax() %}
                 <tr>
                     <td colspan="4" class="text-right">
                         {{ 'invoice.subtotal'|trans }}
@@ -110,6 +111,7 @@
                     </td>
                     <td class="text-right">{{ model.calculator.tax|money(currency) }}</td>
                 </tr>
+                {% endif %}
                 <tr>
                     <td colspan="4" class="text-right text-nowrap">
                         <strong>{{ 'invoice.total'|trans }}</strong>
@@ -142,4 +144,4 @@
         <strong>{{ 'label.contact'|trans }}</strong>: {{ model.template.contact|nl2str(' &ndash; ') }}
     </p>
 </footer>
-{% endblock %}
+{% endblock %}