Fix: Clean param

Conflicts:
	htdocs/fourn/class/fournisseur.facture.class.php
Fix: ref_ext was not loaded

Conflicts:
	htdocs/contact/class/contact.class.php
Fix: missing property
Create contrat_extrafields.sql
Create llx_contrat_extrafields.key.sql

add contrat extrafields key file
Rename contrat_extrafields.sql to llx_contrat_extrafields.sql
Fix: filter on warehouse

Conflicts:
	htdocs/product/stock/mouvement.php
Add object declaration on paiment
Rem duplicate code
Fix: filter on warehouse

Conflicts:
	htdocs/product/stock/mouvement.php
Add doc
Set name of vat number for some countries according to
http://en.wikipedia.org/wiki/VAT_identification_number
Merge remote-tracking branch 'origin/3.4' into develop

Conflicts:
	htdocs/contact/class/contact.class.php
	htdocs/product/stock/mouvement.php
Fix: Manage strange language code reported bu chrome browsers.
Missing translation languages
New: Add hidden option MAIN_FORCE_DEFAULT_STATE_ID.
New: Add page to make mass stock transfert.
Fix: json
Fix: reorder lines problem
Fix: reorder lines problem

Conflicts:
	htdocs/core/class/commonobject.class.php
	htdocs/core/class/html.form.class.php