language can be choosed on windows system too

src/board/UBBoardController.cpp

@@ -1233,11 +1233,12 @@ void UBBoardController::setActiveDocumentScene(UBDocumentProxy* pDocumentProxy,
     if(documentChange)
     {
         emit activeDocumentChanged();
+		emit setDocOnPageNavigator(pDocumentProxy);
         UBGraphicsTextItem::lastUsedTextColor = QColor();
     }
 
     // Notify the navigator palette that the document has changed
-    emit setDocOnPageNavigator(pDocumentProxy);
+    //emit setDocOnPageNavigator(pDocumentProxy);
 
     if (sceneChange)
     {

src/core/UBApplication.cpp

@@ -235,10 +235,12 @@ void UBApplication::setupTranslator(QString forcedLanguage)
 
 
 	    mQtGuiTranslator->load(UBPlatformUtils::translationPath(QString("qt_"),language));
-	    if(mQtGuiTranslator){
+	    if(!mQtGuiTranslator->isEmpty()){
 	    	// checked because this translation could be not available
 	    	installTranslator(mQtGuiTranslator);
 	    }
+		else
+			qDebug() << "Qt gui translation in " << language << " are not available";
 	}
 
 

src/frameworks/UBPlatformUtils_win.cpp

@@ -20,6 +20,7 @@
 #include <windows.h>
 #include <shellapi.h>
 
+#include "frameworks/UBFileSystemUtils.h"
 #include "core/memcheck.h"
 
 void UBPlatformUtils::init()