add contrat extrafields key file

is on.

It's used to mark if the contact is gone or no(we can activate or desactivate the contact with this)
And if the contact is gone,we don't print her mail in the mail list,where we can send a mail

Conflicts:
	htdocs/core/modules/expedition/doc/pdf_rouget.modules.php
	htdocs/expedition/class/expedition.class.php
	htdocs/expedition/fiche.php

Fix: A ref_ext can not be NOT NULL.
New: Add tms field into table llx_bordereau_cheque.

[ task #925 ] Add ODT document generation for Tasks in project module

Conflicts:
	htdocs/install/mysql/migration/3.4.0-3.5.0.sql

Conflicts:
	htdocs/install/mysql/tables/llx_cronjob.sql
	scripts/cron/cron_run_jobs.php

Fix bug on create invoice from contract