added template for pages that should only be accessible to logged in users

template.onlyLoggedIn.php

+<?php
+/**
+ * Template Name: Login
+ *
+ * @package WordPress
+ * @subpackage Fachschaft Informatik
+ * @since Fachschaft Informatik 2.0.0
+ */
+
+get_header();
+
+?>
+	<main>
+		<section class="row">
+			<section class="col-md-8 col-lg-9">
+<?php
+if (!is_user_logged_in()) {
+	echo "
+<fsi-tile class=\"page\">
+	<fsi-title>Zugriff verweigert!</fsi-title>
+	<fsi-subtitle>Bitte einloggen</fsi-subtitle>
+	<article class=\"page\">
+		<p style=\"margin: 100px 0;\">
+			<h2>Um auf diese Seite zuzugreifen musst du eingeloggt sein.</h2>
+		</p>
+		<p style='margin: 50px 0;'>
+			<a href='https://fsi.hochschule-trier.de/wp-login.php?action=shibboleth' class='btn btn-lg center-block btn-primary'>Login</a>
+		</p>
+	</article>
+</fsi-tile>	
+	";
+}
+else {
+	if (have_posts()) {
+		while (have_posts()) {
+			the_post();
+			echo "
+						<fsi-tile class=\"page\">
+							<fsi-title>".get_the_title()."</fsi-title>
+							<fsi-subtitle> Version vom ".get_the_date()."</fsi-subtitle>
+							<article class=\"page\" lang='de'>";
+			the_content();
+			echo "
+							</article>
+							<div style='clear: both;'></div>
+
+						</fsi-tile>
+					";
+		}
+	}
+}
+?>
+			</section>
+			<section class="col-md-4 col-lg-3">
+				<fsi-tile class="sidebar">
+					<?php get_sidebar('sidebar-1'); ?>
+				</fsi-tile>
+			</section>
+		</section>
+
+	</main>
+<?php get_footer(); ?>
\ No newline at end of file