Add a confirmation when cloning products.

ChangeLog

@@ -14,6 +14,7 @@ For users:
 - New: Can add a field errors-to in emailing.
 - New: Can use inline images in emails.
 - New: Add predefined invoices (can be use for repeated invoices).
+- New: Add a confirmation when cloning products.
 - Fix: Customer code was not correct on PDF it if contains special 
        characters.
 - Fix: Can update price even with "NPR" VAT rates.

htdocs/langs/en_US/main.lang

@@ -112,6 +112,7 @@ ConfirmClone=Choose data you want to clone :
 NoCloneOptionsSpecified=No data to clone defined.
 CopyOf=Copy of
 Show=Show
+ShowCardHere=Show card
 Search=Search
 Valid=Valid
 Approve=Approve

htdocs/langs/fr_FR/main.lang

@@ -112,6 +112,7 @@ ConfirmClone=Veuillez choisir votre option de clonage :
 NoCloneOptionsSpecified=Aucun option de clonage n'a été spécifiée.
 CopyOf=Copie de
 Show=Voir
+ShowCardHere=Voir la fiche ici
 Search=Rechercher
 Valid=Valider
 Approve=Approuver

htdocs/product/fiche.php

@@ -260,7 +260,9 @@ if ($_POST["action"] == 'confirm_clone' && $_POST['confirm'] == 'yes' && $user->
 						$_error = 1;
 						$_GET["action"] = "";
 
-						$mesg='<div class="error">'.$langs->trans("ErrorProductAlreadyExists",$product->ref).'</div>';
+						$mesg='<div class="error">'.$langs->trans("ErrorProductAlreadyExists",$product->ref);
+						$mesg.=' <a href="'.$_SERVER["PHP_SELF"].'?ref='.$product->ref.'">'.$langs->trans("ShowCardHere").'</a>.';
+						$mesg.='</div>';
 						//dol_print_error($product->db);
 					}
 					else