Fix codestyle

- return self insteead of return $this
- missing licence header in Dimension.php

refs #4192

library/Icinga/Util/Dimension.php

@@ -1,15 +1,33 @@
 <?php
+// {{{ICINGA_LICENSE_HEADER}}}
 /**
- * Created by JetBrains PhpStorm.
- * User: moja
- * Date: 8/6/13
- * Time: 11:13 AM
- * To change this template use File | Settings | File Templates.
+ * This file is part of Icinga 2 Web.
+ *
+ * Icinga 2 Web - Head for multiple monitoring backends.
+ * Copyright (C) 2013 Icinga Development Team
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * @copyright 2013 Icinga Development Team <info@icinga.org>
+ * @license   http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
+ * @author    Icinga Development Team <info@icinga.org>
  */
+// {{{ICINGA_LICENSE_HEADER}}}
 
 namespace Icinga\Util;
 
-
 class Dimension
 {
     /**

library/Icinga/Web/Widget/Dashboard.php

@@ -159,7 +159,7 @@ class Dashboard implements Widget
      *
      * @param IcingaConfig $config      The configuration file to populate this dashboard with
      *
-     * @return $this
+     * @return self
      */
     public function readConfig(IcingaConfig $config)
     {
@@ -174,7 +174,7 @@ class Dashboard implements Widget
      *
      * @param string $title
      *
-     * @return Dashboard $this
+     * @return self
      */
     public function createPane($title)
     {
@@ -194,7 +194,7 @@ class Dashboard implements Widget
      * @param Component|string $component   The component to add or the title of the newly created component
      * @param $url                          The url to use for the component
      *
-     * @return $this
+     * @return self
      */
     public function setComponentUrl($pane, $component, $url)
     {
@@ -237,7 +237,7 @@ class Dashboard implements Widget
      * @param string $pane                      The pane to remove the component from
      * @param Component|string $component       The component to remove or it's name
      *
-     * @return $this
+     * @return self
      */
     public function removeComponent($pane, $component)
     {
@@ -271,7 +271,7 @@ class Dashboard implements Widget
      *
      * @param Pane $pane        The pane to add
      *
-     * @return $this
+     * @return self
      */
     public function addPane(Pane $pane)
     {

library/Icinga/Web/Widget/Dashboard/Component.php

@@ -25,6 +25,7 @@
  * @author    Icinga Development Team <info@icinga.org>
  */
 // {{{ICINGA_LICENSE_HEADER}}}
+
 namespace Icinga\Web\Widget\Dashboard;
 
 use Icinga\Util\Dimension;
@@ -155,7 +156,7 @@ EOD;
      *
      * @param  string|Url $url  The url to use, either as an Url object or as a path
      *
-     * @return $this
+     * @return self
      */
     public function setUrl($url)
     {

library/Icinga/Web/Widget/Dashboard/Pane.php

@@ -25,6 +25,7 @@
  * @author    Icinga Development Team <info@icinga.org>
  */
 // {{{ICINGA_LICENSE_HEADER}}}
+
 namespace Icinga\Web\Widget\Dashboard;
 
 use Icinga\Exception\ConfigurationError;
@@ -97,7 +98,7 @@ class Pane implements Widget
      *
      * @param string $title     The new title to use for this pane
      *
-     * @return Pane $this
+     * @return self
      */
     public function setTitle($title)
     {
@@ -176,7 +177,7 @@ class Pane implements Widget
      *                                                  (if a new component will be created)
      * @param string|null $url                          An Url to be used when component is a string
      *
-     * @return Pane $this
+     * @return self
      * @throws \Icinga\Exception\ConfigurationError
      */
     public function addComponent($component, $url = null)