VAT identified by a code.

Conflicts:
	htdocs/core/boxes/box_task.php
	htdocs/core/lib/files.lib.php

FIX: Not removing code into vatrate.

fix a lot of beug

Conflicts:
	dev/skeletons/skeleton_list.php
	htdocs/projet/list.php
	htdocs/societe/list.php

Corrected PHP documentation of calcul_price_total function

FIX correctly retreive ref_customer

Update llx_propal_merge_pdf_product.sql

FIX Remove sql error when creating table llx_usergroup_extrafields.sql

FIX Remove sql error when creating table llx_establishment.sql

Add hook parameters on New search Box

FIX When changing thirdparty on event card, the showempty option of
contact was lost.
FIX Bad placeholder shown on combo to select a thirdparty.

Conflicts:
	htdocs/core/lib/files.lib.php

work.

Conflicts:
	htdocs/core/lib/files.lib.php

Conflicts:
	htdocs/core/lib/files.lib.php

ref_client in order
ref_customer in shipping

No need IF NOT EXISTS at install time

No need IF NOT EXISTS at install time

FIX Multiprice generator didn't recalculate prices if only the price_base_type property changes