update translations

templates/pdf/default/I18n/en_US.php

@@ -1,4 +1,27 @@
 <?php
 
-return array (
-);
+return array(
+    'Delivery module' => 'Delivery module',
+    'Page' => 'Page',
+    'Payment module' => 'Payment module',
+    'Postage' => 'Postage',
+    'Product' => 'Product',
+    'Quantity' => 'Quantity',
+    'Ref' => 'Ref',
+    'Tax' => 'Tax',
+    'Taxed total' => 'Taxed total',
+    'Total' => 'Total',
+    'Total with tax' => 'Total incl. tax',
+    'Total without tax' => 'Total without tax',
+    'Unit taxed price' => 'Unit taxed price',
+    'Unit. price' => 'Unit. price',
+    'customer number' => 'customer number',
+    'delivery address' => 'delivery address',
+    'delivery module' => 'delivery module',
+    'invoice' => 'invoice',
+    'invoice address' => 'invoice address',
+    'invoice date' => 'invoice date',
+    'invoice ref' => 'invoice ref',
+    'page' => 'page',
+    'product' => 'product',
+);