Update classes/cache/CacheMemcache.php
[-] Fix: OrderHistory::changeIdOrderState

&$id_order break compatibility with existing codes :

1/ it's unnecessary : Objects are passed by references by default
2/ it causes fatal errors: 
```PHP
$foo->changeIdOrderState((int)$id_order_state, (int)$id_order);
```
Fatal error: Only variables can be passed by reference
[*] BO : use the employee lang
[-] FO : fixed smarty curly bracket

Signed-off-by: Marco Cervellin <marco@macodev.com>
Merge branch 'development' of git://github.com/PrestaShop/PrestaShop into development
Disable search indexation

Search indexation is very CPU-intensive, it should not be used here
[*] FO oosHook must be a div, not a paragraph

for code validation, oosHook must be a div, not a paragraph.
[-] MO: fix a problem with the wishlist_link

With @ArtDesign, we see that if you put the module "Block MyAccount" before the "Wishlist", the wishlist_link var is not declare yet, so the link is empty. If you put the var in the header, it can be accessed by the other tpl.

Or, we can put this in a {$link->getModuleLink(...)} in TPL
[-] BO: Fix #PSCFV-7377 second part
[-] FO - fixed bug #PSCFV-6620 - reply to customer thread not working properly
[-] MO: Fix #PSCFV-7416 product name in blocklayered listing with multishop
[-] FO: Fix #PSCFV-7322 Product::getProductProperties quantity cache
[-] BO - fixed bug #PSCFV-6195 - Currency format not re-writing in product tab shipping
Merge branch 'development' of https://github.com/PrestaShop/PrestaShop into development
[-] Core: Fix #PSCFV-7484 cache in Product::priceCalculation
[-] BO - fixed bug #PSCFV-6248 don't delete product when delete category and choose option to delete products
Merge branch 'development' of https://github.com/PrestaShop/PrestaShop into development
[*] Class Tools: enhance fd method

Add the posibilities to set an error, warning, info or assert.

Usage:
Tools::fd('test');
		Tools::fd('test', 'debug');
		Tools::fd('test', 'info');
		Tools::fd('test', 'warn');
		Tools::fd('test', 'error');
		Tools::fd('test', 'assert');
[-] CORE : Missing displayError for alias q
//fix warnings