n°524 - password policy

- The code now uses the standard extension method (using interfaces)
 - the metamodel can now filter on iModuleExtension in order to leverage extensions modularity (see MetaModel::EnumPlugins second param)
 - during the setup, there is no pawsord policy control
 - there is now a default policy
 - new (more precie) translation reflecting the default policy
 - fix CI?

application/applicationextension.inc.php

@@ -1528,3 +1528,16 @@ class RestUtils
 		return $oObject;
 	}
 }
+
+
+/**
+ * Helpers for modules extensibility, with discover performed by the MetaModel.
+ *
+ *
+ * @api
+ * @package     Extensibility
+ */
+interface iModuleExtension
+{
+	public function __construct();
+}