Develop

 	[ task #122 ] Create a scheduled cron module 

fix error translation

display enhancement and normalize

bought/sells.
(i implement list for customer invoices and supplier orders, need
someone to finish work for customer orders and supplier invoices)

fix :constant error

display enhancement and standardize

fix sql error

Must match module customer invoice.

fix getting buying price when creating automatically an order from a proposal

fix getting buying price when creating automatically an order from a proposal (with first option activated in workflow module)

Update fiche.php

can now create contract from signed propal