[backend] Distribution : report Terre de pains

backend/controllers/DistributionController.php

@@ -632,6 +632,7 @@ class DistributionController extends BackendController
                     $productsNameArray[] = $product->name .$theUnit ;
                     $productsIndexArray[$product->id] = $cpt ++ ;
                 }
+                $productsNameArray[] = 'Total' ;
                 $datas[] = $productsNameArray ;
 
                 // global