if no suppliers selected, no subprice yet

Fix categorie navigation

Fix delete product from product card

expense report.

Conflicts:
	htdocs/expensereport/payment/payment.php

Conflicts:
	htdocs/accountancy/class/bookkeeping.class.php
	htdocs/compta/facture/list.php
	htdocs/compta/paiement/class/cpaiement.class.php
	htdocs/compta/sociales/card.php
	htdocs/core/lib/functions.lib.php
	htdocs/expensereport/card.php
	htdocs/expensereport/class/expensereport.class.php
	htdocs/product/stats/facture.php

FIX : we have to check if contact doesn't already exist on add_contact

Fix some problems

New add trigger disable to updateline functions