Fixed: Ton of old bugs when debugging POS.

htdocs/admin/stock.php

htdocs/cashdesk/affContenu.php

htdocs/cashdesk/css/style.css

htdocs/cashdesk/facturation_verif.php

htdocs/cashdesk/tpl/facturation1.tpl.php

htdocs/cashdesk/tpl/liste_articles.tpl.php

htdocs/cashdesk/tpl/validation1.tpl.php

htdocs/cashdesk/tpl/validation2.tpl.php

htdocs/cashdesk/validation_verif.php

htdocs/langs/en_US/admin.lang

htdocs/product/stock/product.php