Several minor issues (#8948)

* #8947 Plot Template : Split export dialog into file path and name
* #8946  Update multi plot title when curve is appended by copy/paste
* #8946 Separate axis object name and axis title text
* If multi plot auto name is empty, use plot title "Plot N"
* QwtPlotWidget: Double click activates Zoom All
* More testing on valid main window before use
* Return false if event is not handeled
* Improve fallback plot name
* Tree View Editor: Early exit if selected object is unchanged
Resetting selection causes flickering
* Summary Plot : Select curve object in project tree when clicking on curve

ApplicationLibCode/UserInterface/RiuPlotMainWindowTools.cpp

@@ -83,6 +83,21 @@ void RiuPlotMainWindowTools::toggleItemInSelection( const caf::PdmObject* object
     }
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RiuPlotMainWindowTools::selectOrToggleObject( const caf::PdmObject* object, bool toggle )
+{
+    if ( toggle )
+    {
+        RiuPlotMainWindowTools::toggleItemInSelection( object );
+    }
+    else
+    {
+        RiuPlotMainWindowTools::selectAsCurrentItem( object );
+    }
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------