Fix SPEC #7013 : use database type "numeric" to store monetary values

Fix: missing _cleanObjectDatas function

Fix: error when the project module not enabled

NEW log download or preview event on a validate bill

Make accounting module compatible with the new vat code to identify 2
vat code with same rate.

Make accounting module compatible with the new vat code to identify 2
vat code with same rate.

Conflicts:
	htdocs/user/index.php

Conflicts:
	htdocs/compta/facture.php
	htdocs/core/datepicker.php
	htdocs/core/get_menudiv.php
	htdocs/core/menus/standard/auguria.lib.php
	htdocs/core/menus/standard/eldy.lib.php
	htdocs/core/search_page.php
	htdocs/main.inc.php
	htdocs/master.inc.php
	htdocs/product/list.php
	htdocs/theme/eldy/style.css.php
	htdocs/theme/md/style.css.php
	htdocs/user/card.php
	htdocs/user/index.php

Conflicts:
	htdocs/core/lib/functions.lib.php
	htdocs/theme/eldy/style.css.php
	htdocs/theme/md/style.css.php
	htdocs/user/index.php