"_locale" using correct language file.

Add rfc and dayall format for extrafields date

address.

FIX MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND is always overriden

Fix Warning #4229 PHP7

Fix: a minor error was locking the full upgrade process.

FIX: Field cost_price does not exist and typos

Conflicts:
	htdocs/commande/class/commande.class.php
	htdocs/filefunc.inc.php
	htdocs/product/list.php
	htdocs/societe/notify/card.php
	htdocs/societe/price.php

Conflicts:
	build/makepack-howto.txt
	htdocs/filefunc.inc.php

Conflicts:
	build/debian/changelog
	build/makepack-dolibarr.pl
	build/makepack-howto.txt
	htdocs/filefunc.inc.php

FIX #3980 Search field in "product by supplier" list sends empty result 3.8 and 3.7

FIX #4036 Direct printing module without any driver configured, shows an unformatted error message

FIX #4302 Undefined variable $conf in Commande::LibStatut

FIX #4282 Defined shipping time were not shown in Customer order's PDF documents

FIX #4287 SQL error when accessing an unexisting proposal

Little typo in commit 8b633aee

add odt info function call if present in class

FIX : Working on accountancy