Feature/merge 3 0 develop (#298)

* merging 3.0 into develop

* N°5102 - Allow to send emails (eg. notifications) using GSuite SMTP and OAuth
* migration to iTop 3.1

Co-authored-by: Eric Espie <eric.espie@combodo.com>

sources/Core/Email/EmailFactory.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Combodo\iTop\Core\Email;
+
+use EMailLaminas;
+
+class EmailFactory
+{
+	public static function GetMailer()
+	{
+		return EMailLaminas::GetMailer();
+	}
+}