go/svc/invoice: tiny template fixes
diff --git a/go/svc/invoice/templates/invoice.html b/go/svc/invoice/templates/invoice.html
index 6bf2947..df49da8 100644
--- a/go/svc/invoice/templates/invoice.html
+++ b/go/svc/invoice/templates/invoice.html
@@ -46,6 +46,10 @@
     margin: 0;
     text-transform: uppercase;
 }
+h2 {
+    font-size: 1.2em;
+    margin: 0;
+}
 table.items {
     text-align: right;
     border-spacing: 0px;
@@ -123,10 +127,11 @@
         <div class="lhs">
             <div class="invoicee">
                 {{ if .Proforma }}
-                <h1>Faktura proforma:</h1>
+                <h1>Faktura Proforma</h1>
                 {{ else }}
-                <h1>Faktura VAT:</h1>
+                <h1>Faktura VAT</h1>
                 {{ end }}
+                <h2>nr. {{ .InvoiceNumber }}</h2>
                 <ul>
                     {{ range $i, $e := .InvoiceeBilling }}
                     {{ if eq $i 0 }}
@@ -143,7 +148,7 @@
                     {{ end }}
 
                     {{ if .ReverseVAT }}
-                    <li><b>(reverse charge applies)</b></li>
+                    <li><b>(nie podlega VAT)</b></li>
                     {{ end }}
                 </ul>
             </div>
@@ -173,7 +178,7 @@
                 <td>{{ .TotalNet }}</td>
             </tr>
             <tr>
-                <td colspan="5" class="lhead">VAT{{ if .ReverseVAT }} (reverse charge applies){{ end }} {{ if .USCustomer }}(VAT zero rate){{ end }}</td>
+                <td colspan="5" class="lhead">VAT{{ if .ReverseVAT }} (nie podlega){{ end }} {{ if .USCustomer }}(nie podlega){{ end }}</td>
                 <td>{{ .VATTotal }}</td>
             </tr>
             <tr>