add signal prototypes

src/model/xqviewmodel.h

@@ -95,12 +95,16 @@ public:
 
   */
 
+
+  virtual void onItemChanged( XQItem& item ) = 0;
+
 public slots:
 
   virtual void onShowContextMenu(const QPoint& point);
   virtual void onActionTriggered(QAction* action);
   virtual void onToggleSection(const QString& sectionKey );
 
+
   // handle XQCommands ( == UndoCommand )
   virtual void onCommandRedo( const XQCommand& command );
   virtual void onCommandUndo( const XQCommand& command );