Refactor Core Update (+3 squashed commit)

Squashed commit:

[e1cbfe93f] Refactor Core Update

[41ec2adf7] Refactor Core Update

[ca6cefca3] Refactor Core Update

sources/application/TwigBase/Twig/TwigHelper.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * @copyright   Copyright (C) 2010-2019 Combodo SARL
+ * @license     http://opensource.org/licenses/AGPL-3.0
+ */
+
+namespace Combodo\iTop\Application\TwigBase\Twig;
+
+use Twig_Environment;
+use Twig_Loader_Filesystem;
+
+
+class TwigHelper
+{
+	public static function GetTwigEnvironment($sViewPath)
+	{
+		$oLoader = new Twig_Loader_Filesystem($sViewPath);
+		$oTwig = new Twig_Environment($oLoader);
+		Extension::RegisterTwigExtensions($oTwig);
+
+		return $oTwig;
+	}
+}