License source files as GPL-3.0-or-later

Add SPDX license headers and mark source files as GPL-3.0-or-later to
preserve the option to relicense under later GPL versions.

Author: lippserd

application/controllers/ConfigController.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2019 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2019 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 namespace Icinga\Module\Pdfexport\Controllers;
 

application/forms/ChromeBinaryForm.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2019 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2019 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 namespace Icinga\Module\Pdfexport\Forms;
 

configuration.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2019 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2019 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 /** @var \Icinga\Application\Modules\Module $this */
 

library/Pdfexport/HeadlessChrome.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2018 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2018 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 namespace Icinga\Module\Pdfexport;
 

library/Pdfexport/PrintStyleSheet.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2021 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2021 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 namespace Icinga\Module\Pdfexport;
 

library/Pdfexport/PrintableHtmlDocument.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2019 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2019 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 namespace Icinga\Module\Pdfexport;
 

library/Pdfexport/ProvidedHook/Pdfexport.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2018 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2018 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 namespace Icinga\Module\Pdfexport\ProvidedHook;
 

library/Pdfexport/ShellCommand.php

@@ -1,6 +1,7 @@
 <?php
 
-/* Icinga PDF Export | (c) 2018 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2018 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 namespace Icinga\Module\Pdfexport;
 

public/css/print.less

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2021 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // icingaweb2
 
 @gray: #7F7F7F;

public/js/layout-plugins/page-breaker.js

@@ -1,4 +1,5 @@
-/* Icinga PDF Export | (c) 2021 Icinga GmbH | GPLv2 */
+// SPDX-FileCopyrightText: 2021 Icinga GmbH <https://icinga.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 "use strict";