tutorial url as app paremeter

src/core/UBSettings.cpp

@@ -210,6 +210,8 @@ void UBSettings::init()
 
     softwareHomeUrl = productWebUrl->get().toString();
 
+    tutorialUrl = new UBSetting(this,"App","TutorialUrl","http://www.youtube.com/channel/UCM_moFB68dqpSLPZ-jV40Ow");
+
     documentSizes.insert(DocumentSizeRatio::Ratio4_3, QSize(1280, 960)); // 1.33
     documentSizes.insert(DocumentSizeRatio::Ratio16_9, QSize((960 / 9 * 16), 960)); // 1.77
 

src/core/UBSettings.h

@@ -227,6 +227,8 @@ class UBSettings : public QObject
 
         QString softwareHomeUrl;
 
+        UBSetting* tutorialUrl;
+
         UBSetting* appToolBarPositionedAtTop;
         UBSetting* appToolBarDisplayText;
         UBSetting* appEnableAutomaticSoftwareUpdates;

src/web/UBWebController.cpp

@@ -90,7 +90,7 @@ UBWebController::~UBWebController()
 
 void UBWebController::onOpenTutorial()
 {
-    loadUrl(QUrl("http://tutorial.openboard.org"));
+    loadUrl(QUrl(UBSettings::settings()->tutorialUrl->get().toString()));
 }
 
 void UBWebController::initialiazemOEmbedProviders()