N°2435.1 Portal: Split portal composer.json in 2

- Autoloader for portal files in the itop-portal-base module
- Dependencies moved to root composer.json
- Add autoloader for /core and /application content

lib/symfony/http-kernel/Tests/Exception/LengthRequiredHttpExceptionTest.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Symfony\Component\HttpKernel\Tests\Exception;
+
+use Symfony\Component\HttpKernel\Exception\LengthRequiredHttpException;
+
+class LengthRequiredHttpExceptionTest extends HttpExceptionTest
+{
+    protected function createException()
+    {
+        return new LengthRequiredHttpException();
+    }
+}