to hide it.

Conflicts:
	htdocs/commande/class/api_commande.class.php
	htdocs/core/class/CMailFile.class.php
	htdocs/societe/class/api_contact.class.php

security.

Fix: avoid errors if constants values not exists

fix : warehouse creation failed with mysql 5.7 (string 'NULL' instead of "NULL")

Fix : Bank - Presentation, no titlefield in a list

Fix #6247 #6248 Contact and Commands REST WebServices failed

Fix : Bank - Missing language file

"NULL")

https://wiki.debian.org/Teams/MySQL/virtual-mysql-server

This reverts commit 37d158f1.