add the posibility to also use transistent and toast notifications

AdminNotification.php

@@ -43,7 +43,7 @@ public function setNotificationV3()
             $notification = new Notification($settings->message->getValue());
             $notification->title = $settings->messageTitle->getValue();
             $notification->context = $settings->context->getValue();
-            $notification->type = Notification::TYPE_PERSISTENT;
+            $notification->type = $settings->type->getValue();
             //$notification->priority = Notification::PRIORITY_MAX;
 
             //echo "NOTIFY";

SystemSettings.php

@@ -36,6 +36,9 @@ class SystemSettings extends \Piwik\Settings\Plugin\SystemSettings
     /** @var Setting */
     public $message;
 
+    /** @var Setting */
+    public $type;
+
     protected function init()
     {
 
@@ -46,6 +49,8 @@ protected function init()
         $this->messageTitle = $this->createTitleSetting();
 
         $this->message = $this->createMessageSetting();
+
+        $this->type = $this->createTypeSetting();
     }
 
     private function createEnabledSetting()
@@ -103,6 +108,24 @@ private function createMessageSetting()
         });
     }
 
+    private function createTypeSetting()
+    {
+        return $this->makeSetting(
+            'type',
+            $default = "persistent",
+            FieldConfig::TYPE_STRING,
+            function (FieldConfig $field) {
+                $field->title = $this->t('TypeSettingTitle');
+                $field->condition = 'enabled';
+                $field->uiControl = FieldConfig::UI_CONTROL_SINGLE_SELECT;
+                $field->description = $this->t('TypeSettingDescription');
+                $field->availableValues = array(Notification::TYPE_PERSISTENT => Notification::TYPE_PERSISTENT,
+                                                Notification::TYPE_TRANSIENT => Notification::TYPE_TRANSIENT,
+                                                Notification::TYPE_TOAST => Notification::TYPE_TOAST);
+            }
+        );
+    }
+
     private function t($translate_token)
     {
         return Piwik::translate("AdminNotification_" . $translate_token);

lang/en.json

@@ -8,6 +8,9 @@
         "ContextSettingTitle": "Context",
         "ContextSettingDescription": "Sets what type of message should be displayed (affects color).",
         "TitleSettingTitle": "Title",
-        "TitleSettingDescription": "Sets the title of the message. This will be dislayed in bold with the message."
+        "TitleSettingDescription": "Sets the title of the message. This will be dislayed in bold with the message.",
+        "TypeSettingTitle": "Type",
+        "TypeSettingDescription": "Persistent (display until user closes the notification), Transient (displays once, disappear on page reload) or Toast (displayed for a few seconds, and the fades out)"
+
     }
 }