better unsaved changes code, only block whitespace in combos

include/editor.h

@@ -210,7 +210,7 @@ signals:
     void warpEventDoubleClicked(QString mapName, QString warpNum);
     void currentMetatilesSelectionChanged();
     void mapRulerStatusChanged(const QString &);
-    void shouldUpdateWindow();
+    void editedMapData();
 };
 
 #endif // EDITOR_H

include/mainwindow.h

@@ -307,6 +307,7 @@ private:
     void checkToolButtons();
     void clickToolButtonFromEditMode(QString editMode);
 
+    void markMapEdited();
     void showWindowTitle();
 
     void initWindow();