[-] BO : fix addFiltersToBreadcrumbs

In initProcess(), $this->filter is set to true if filters are  used. it's better to used it than to check "submitFilter".

This fixes the following problem:

In Back office, creating a link to the list of orders filtered by customer (on the customer page) using AdminOrdersController.

<form  method="post" action="{$link->getAdminLink('AdminOrders')|escape:'html':'UTF-8'}">
   <input type="hidden" name="orderFilter_id_customer" value="{$customer->id|intval}" />
   <input type="hidden" name="orderFilter_customer" value="{$customer->lastname|escape:'html':'UTF-8'} {$customer->firstname|escape:'html':'UTF-8'}" />
   <input type="submit" name="submitFilterorder" value="{l s='All customer orders'}" />
</form>

"submitFilter" can't be used, because javascript function stops the form submit.
// HTMLTemplateOrderSlip: clearer wording.
Merge pull request #1634 from xBorderie/patch-1

// HTMLTemplateOrderSlip: clearer wording.
// AdminPPreferencesController: Clearer wording.
// AdminStockManagementController: better wording.
// AdminStockManagementController: better wording.
Merge pull request #1636 from xBorderie/patch-3

// AdminStockManagementController: better wording.
Merge pull request #1635 from xBorderie/patch-2

// AdminPPreferencesController: Clearer wording.
// fix copy of stockavailable on shop creation
Merge branch '1.6' of github.com:PrestaShop/PrestaShop into 1.6
// blockwishlist: better wording.
// Spelling mistake
Merge pull request #1637 from xBorderie/patch-1

// blockwishlist: better wording.
[-] Core : Bug #PSCSX-1610, Fix stock management issue with supply order
[-] FO : Fix bug #PSCSX-1626, cat img not responsive
// norms
[-] BO : Fix bug #PSCFV-10539, memcache_connect
// refacto paymentmodule, mail template used
Merge remote-tracking branch 'origin/1.6' into 1.6
// module's folder img is kept unmodified when upgrading the module