Fix: Must unaccent strings into SEPA file.

http://php.net/manual/en/language.basic-syntax.phptags.php

Conflicts:
	ChangeLog

that need a task to fix. This is not the case for a close thirdparty (a
close thirdparty is a regular status). However to have a bigger contrast
with thirdparty active, i set picto to statut5.png

I'm getting tired of these commits...

parameter currency of method price.

Qual: Removed deprecated vars
Qual: Free memory

Fixed bug #866: Standing order from an invoice suggests invoice total amount instead of remaining to pay