ApplicationStateController: Initalize `$autorefreshInterval`

Instead of defining it with the setter. This prevents the
user's preferences from having an effect on this route.

application/controllers/ApplicationStateController.php

@@ -17,6 +17,8 @@ class ApplicationStateController extends Controller
 {
     protected $requiresAuthentication = false;
 
+    protected $autorefreshInterval = 60;
+
     public function init()
     {
         $this->_helper->layout->disableLayout();
@@ -63,8 +65,6 @@ class ApplicationStateController extends Controller
                 }
             }
         }
-
-        $this->setAutorefreshInterval(60, true);
     }
 
     public function summaryAction()
@@ -72,8 +72,6 @@ class ApplicationStateController extends Controller
         if ($this->Auth()->isAuthenticated()) {
             $this->getResponse()->setBody((string) Widget::create('ApplicationStateMessages'));
         }
-
-        $this->setAutorefreshInterval(60, true);
     }
 
     public function acknowledgeMessageAction()

library/Icinga/Web/Controller/ActionController.php

@@ -64,6 +64,13 @@ class ActionController extends Zend_Controller_Action
      */
     protected $moduleName;
 
+    /**
+     * A page's automatic refresh interval
+     *
+     * The initial value will not be subject to a user's preferences.
+     *
+     * @var int
+     */
     protected $autorefreshInterval;
 
     protected $reloadCss = false;
@@ -341,6 +348,18 @@ class ActionController extends Zend_Controller_Action
         }
     }
 
+    /**
+     * Set the interval (in seconds) at which the page should automatically refresh
+     *
+     * This may be adjusted based on the user's preferences. The result could be a
+     * lower or higher rate of the page's automatic refresh. If this is not desired,
+     * the only way to bypass this is to initialize the {@see ActionController::$autorefreshInterval}
+     * property or to set the `autorefreshInterval` property of the layout directly.
+     *
+     * @param int $interval
+     *
+     * @return $this
+     */
     public function setAutorefreshInterval($interval)
     {
         if (! is_int($interval) || $interval < 1) {