title: Can't add {message} variable to order_conf mail template
body: <p>On my <code>classes/PaymentModule.php</code> I have declared <code>'{message}' =&gt; $customer_message</code> (between other vars) but still my customers see <code>Wiadomość: {message}
  </code> in mails which they recieved. </p>
  
  <p>What do I wrong? Maybe declare {message} var in PaymentModule.php is not enough?</p>
  
  <p>UDPATE:</p>
  
  <p>this is standard PaymentModule.php code in Prestashop 1.6.2.1 with added {message} variable:</p>
  
  <pre><code>$customer_message = $order-&gt;getFirstMessage();
  $data = array(
              '{firstname}' =&gt; $this-&gt;context-&gt;customer-&gt;firstname,
              '{lastname}' =&gt; $this-&gt;context-&gt;customer-&gt;lastname,
              '{email}' =&gt; $this-&gt;context-&gt;customer-&gt;email,
              '{delivery_block_txt}' =&gt; $this-&gt;_getFormatedAddress($delivery, "\n"),
              '{invoice_block_txt}' =&gt; $this-&gt;_getFormatedAddress($invoice, "\n"),
              '{delivery_block_html}' =&gt; $this-&gt;_getFormatedAddress($delivery, '&lt;br /&gt;', array(
                  'firstname'    =&gt; '&lt;span style="font-weight:bold;"&gt;%s&lt;/span&gt;',
                  'lastname'    =&gt; '&lt;span style="font-weight:bold;"&gt;%s&lt;/span&gt;'
              )),
              '{invoice_block_html}' =&gt; $this-&gt;_getFormatedAddress($invoice, '&lt;br /&gt;', array(
                      'firstname'    =&gt; '&lt;span style="font-weight:bold;"&gt;%s&lt;/span&gt;',
                      'lastname'    =&gt; '&lt;span style="font-weight:bold;"&gt;%s&lt;/span&gt;'
              )),
              '{delivery_company}' =&gt; $delivery-&gt;company,
              '{delivery_firstname}' =&gt; $delivery-&gt;firstname,
              '{delivery_lastname}' =&gt; $delivery-&gt;lastname,
              '{delivery_address1}' =&gt; $delivery-&gt;address1,
              '{delivery_address2}' =&gt; $delivery-&gt;address2,
              '{delivery_city}' =&gt; $delivery-&gt;city,
              '{delivery_postal_code}' =&gt; $delivery-&gt;postcode,
              '{delivery_country}' =&gt; $delivery-&gt;country,
              '{delivery_state}' =&gt; $delivery-&gt;id_state ? $delivery_state-&gt;name : '',
              '{delivery_phone}' =&gt; ($delivery-&gt;phone) ? $delivery-&gt;phone : $delivery-&gt;phone_mobile,
              '{delivery_other}' =&gt; $delivery-&gt;other,
              '{invoice_company}' =&gt; $invoice-&gt;company,
              '{invoice_vat_number}' =&gt; $invoice-&gt;vat_number,
              '{invoice_firstname}' =&gt; $invoice-&gt;firstname,
              '{invoice_lastname}' =&gt; $invoice-&gt;lastname,
              '{invoice_address2}' =&gt; $invoice-&gt;address2,
              '{invoice_address1}' =&gt; $invoice-&gt;address1,
              '{invoice_city}' =&gt; $invoice-&gt;city,
              '{invoice_postal_code}' =&gt; $invoice-&gt;postcode,
              '{invoice_country}' =&gt; $invoice-&gt;country,
              '{invoice_state}' =&gt; $invoice-&gt;id_state ? $invoice_state-&gt;name : '',
              '{invoice_phone}' =&gt; ($invoice-&gt;phone) ? $invoice-&gt;phone : $invoice-&gt;phone_mobile,
              '{invoice_other}' =&gt; $invoice-&gt;other,
              '{order_name}' =&gt; $order-&gt;getUniqReference(),
              '{date}' =&gt; Tools::displayDate(date('Y-m-d H:i:s'), null, 1),
              '{carrier}' =&gt; ($virtual_product || !isset($carrier-&gt;name)) ? Tools::displayError('No carrier') : $carrier-&gt;name,
              '{payment}' =&gt; Tools::substr($order-&gt;payment, 0, 32),
              '{products}' =&gt; $product_list_html,
              '{products_txt}' =&gt; $product_list_txt,
              '{discounts}' =&gt; $cart_rules_list_html,
              '{discounts_txt}' =&gt; $cart_rules_list_txt,
              '{total_paid}' =&gt; Tools::displayPrice($order-&gt;total_paid, $this-&gt;context-&gt;currency, false),
              '{total_products}' =&gt; Tools::displayPrice(Product::getTaxCalculationMethod() == PS_TAX_EXC ? $order-&gt;total_products : $order-&gt;total_products_wt, $this-&gt;context-&gt;currency, false),
              '{total_discounts}' =&gt; Tools::displayPrice($order-&gt;total_discounts, $this-&gt;context-&gt;currency, false),
              '{total_shipping}' =&gt; Tools::displayPrice($order-&gt;total_shipping, $this-&gt;context-&gt;currency, false),
              '{total_wrapping}' =&gt; Tools::displayPrice($order-&gt;total_wrapping, $this-&gt;context-&gt;currency, false),
              '{message}' =&gt; $customer_message,
              '{total_tax_paid}' =&gt; Tools::displayPrice(($order-&gt;total_products_wt - $order-&gt;total_products) + ($order-&gt;total_shipping_tax_incl - $order-&gt;total_shipping_tax_excl), $this-&gt;context-&gt;currency, false));
  </code></pre>
  
  <p>In order_conf.html:</p>
  
  <pre><code>...
  Wiadomość: {message}
  ....
  </code></pre>