FIX : origin & origin id on supplier order line

FIX : forgotten fk_unit field on llx_supplier_propaldet

NEW : introducing "mixte" mode for select_duration

Conflicts:
	htdocs/langs/en_US/main.lang

Conflicts:
	htdocs/compta/facture.php
	htdocs/core/boxes/box_produits.php
	htdocs/core/boxes/box_produits_alerte_stock.php
	htdocs/langs/en_US/bills.lang
	htdocs/product/class/product.class.php
	htdocs/theme/eldy/style.css.php
	htdocs/theme/md/style.css.php

If 'select' then input hour and input min is a combo,
if 'text' input hour is in text and input min is a text, 
if 'mixte' input hour is in text and input min is a combo

Conflicts:
	htdocs/projet/class/project.class.php

Conflicts:
	htdocs/projet/class/project.class.php