Translations made by Juanjo Menent (simnandez)

Conflicts:
	htdocs/comm/propal/class/propal.class.php
	htdocs/compta/facture.php
	htdocs/compta/facture/impayees.php
	htdocs/compta/index.php
	htdocs/core/boxes/box_produits_alerte_stock.php
	htdocs/core/class/html.form.class.php
	htdocs/core/modules/syslog/mod_syslog_file.php
	htdocs/fourn/facture/impayees.php
	htdocs/holiday/class/holiday.class.php
	htdocs/holiday/fiche.php

Fix : use standard method to show extrafields on propal

Holidays translations

Fix: [ bug #857 ] Invoice created from shipment does not have the order ...

Improved translations

Corrected incorrect lang trans key

develop

Conflicts:
	htdocs/comm/propal/class/propal.class.php

Fix visibility of elements into product page (manage external users)