Merge pull request #9048 from OPM/9047-performance-avoid-update-project

- Avoid update of project when creating new objects
- Added icon resource cache
- Avoid use of descendantsIncludingThisOfType()

ApplicationLibCode/Commands/WellLogCommands/RicAddWellLogToPlotFeature.cpp

@@ -104,8 +104,6 @@ void RicAddWellLogToPlotFeature::onActionTriggered( bool isChecked )
     }
     plot->updateLayout();
 
-    RimProject::current()->updateConnectedEditors();
-
     RiuPlotMainWindowTools::showPlotMainWindow();
     RiuPlotMainWindowTools::selectAsCurrentItem( plot );
     RiuPlotMainWindowTools::setExpanded( plotTrack );