Fix: rename "area" to "textarea"

New: add js files for default datepicker options
New: add edit_datepicker for edit in place (not stable)

htdocs/core/js/datepicker.js

@@ -0,0 +1,17 @@
+// Copyright (C) 2011 Regis Houssin  <regis@dolibarr.fr>
+//
+// Script javascript that contains functions for datepicker default options
+//
+// \file       htdocs/core/js/datepicker.js
+// \brief      File that include javascript functions for datepicker default options
+
+
+$(document).ready(function() {
+	$.datepicker.setDefaults({
+		monthNames: tradMonths,
+		monthNamesShort: tradMonthsMin,
+		dayNames: tradDays,
+		dayNamesMin: tradDaysMin,
+		dateFormat: datePickerFormat
+	});
+});