[*] BO: hide hooks without module
[*] BO: move validateImportation() JS function
Correct bug for customization

When a customization was done on a lower PS version, $id_address_delivery is set to 0 for the customization.
Update Product.php
Update Product.php
// AdminInvoicesController: wording

(should impact the Statuses BO section as well)
// AdminStatusesController: wording
// AdminCustomersController: wording
Merge pull request #1932 from AlexEven/patch-1

// Admin controllers : wording
// #PSCSX-1463 w3c
Merge branch '1.6' of https://github.com/PrestaShop/PrestaShop into 1.6
// Update Autoload
// #PSCSX-1463 w3c
// getContacts group by
// #PSCSX-1463 w3c
// #PSCSX-1463 w3c
// #PSCSX-1463 w3c
// w3c
Merge pull request #1704 from PrestaEdit/validateImportation

[*] BO: move validateImportation() JS function
Merge pull request #1669 from PrestaEdit/patch-70

[*] BO: hide hooks without module