ui: Refresh UI state only after every style refresh in each view finished (#917)

Separated UI refresh into 'style' and 'state' refresh to avoid race condition between task scheduler thread and UI thread that affected code view state.
fixes #916

src/lib/app/Application.cpp

@@ -351,6 +351,8 @@ void Application::handleMessage(MessageRefreshUI* message)
 		}
 
 		m_mainView->refreshViews();
+
+		m_mainView->refreshUIState(message->isAfterIndexing);
 	}
 }