FIX re-establish user-agent when using nusoap client

re-establish user-agent

FIX: systematic rounding causes prices to be updated without reason

FIX: dont retrieve new buying price on margin display

FIX #4414 Supplier invoices use FAC_FORCE_DATE_VALIDATION client invoices property

Close #4414

FIX: add missing global def for ttc column

FIX ISSUE #4506 : make working the PROPAL_CLONE_ON_CREATE_PAGE hidden constant

Corrected typo of PR #4444

FIX: Contrat card don't consider user permissions to show active/unactive service button

constant

Conflicts:
	htdocs/main.inc.php

FIX #4440 Wrong price is filled by Product::fetch into multiprices arrays

Fix: $outputlangs is not defined (dolibarr 3.7, 3.8, 3.9)

This reverts commit c71d5789.

FIX: The third dashboard don't consider user permissions

FIX: Email templates not compatible with Multicompany

Conflicts:
	htdocs/admin/agenda_extsites.php