Improve code style

Remove field Skype. Already present in dol_banner_tab.

NEW: Export max payment date with supplier invoices

$soc not needed (thirpartie used instead)

var to public

Loan | Donation | Social contribution : Complete work on dol_banner

Fix: Accountancy Expense report index

Fix: Travis

new: Professional identifiers for Algeria

Fix: Traduction on index accountancy page & improvements

with mysql.

add project if likned to another third on project view)

Conflicts:
	htdocs/expensereport/list.php

Improve code style to current php practices