fixed activeDocumentChange signal that is no more actual

src/board/UBBoardController.cpp

@@ -69,7 +69,6 @@
 #include "core/UBSettings.h"
 
 #include "core/memcheck.h"
-//#include <typeinfo>
 
 UBBoardController::UBBoardController(UBMainWindow* mainWindow)
     : UBDocumentContainer(mainWindow->centralWidget())

src/gui/UBTeacherGuideWidget.cpp

@@ -135,7 +135,8 @@ UBTeacherGuideEditionWidget::UBTeacherGuideEditionWidget(QWidget *parent, const
 
     if(UBSettings::settings()->teacherGuideLessonPagesActivated->get().toBool()){
         UBSvgSubsetAdaptor::addElementToBeStored(QString("teacherGuide"),this);
-        connect(UBApplication::boardController,SIGNAL(activeDocumentChanged()),this,SLOT(onActiveDocumentChanged()));
+        //connect(UBApplication::boardController,SIGNAL(activeDocumentChanged()),this,SLOT(onActiveDocumentChanged()));
+        connect(UBApplication::boardController,SIGNAL(documentSet(UBDocumentProxy*)),this,SLOT(onActiveDocumentChanged()));
     }
 }