Refactor authentication system (#2602)

Make auth configuration available via UI, remove FOSUserBundle and SAML-Bundle dependency

tests/Saml/Token/SamlTokenTest.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Saml\Token;
+
+use App\Saml\Token\SamlToken;
+use App\Saml\Token\SamlTokenInterface;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Saml\Token\SamlToken
+ */
+class SamlTokenTest extends TestCase
+{
+    public function testCreateToken()
+    {
+        $sut = new SamlToken();
+
+        self::assertInstanceOf(SamlTokenInterface::class, $sut);
+        self::assertNull($sut->getCredentials());
+    }
+}