redo problem fixed. Issue 83

src/domain/UBGraphicsItemUndoCommand.cpp

@@ -157,7 +157,7 @@ void UBGraphicsItemUndoCommand::undo()
 
 }
 
-/*void UBGraphicsItemUndoCommand::redo()
+void UBGraphicsItemUndoCommand::redo()
 {
     // the Undo framework calls a redo while appending the undo command.
     // as we have already plotted the elements, we do not want to do it twice
@@ -236,4 +236,3 @@ void UBGraphicsItemUndoCommand::undo()
         mFirstRedo = false;
     }
 }
-*/

src/domain/UBGraphicsItemUndoCommand.h

@@ -52,7 +52,7 @@ class UBGraphicsItemUndoCommand : public UBUndoCommand
 
     protected:
         virtual void undo();
-        //virtual void redo();
+        virtual void redo();
 
     private:
         UBGraphicsScene* mScene;