public App()
        {
            InitializeComponent();

            AppInitializer = new AppInitializer();
            AppInitializer.InitalizeDatabase();
            AppInitializer.InitalizeGlobalObjects();
            AppInitializer.InitializeConfig();

            /* Set css theme version */
            ViewHelper.SetAppGlobalTheme(Resources, "1");

            //old
            MainPage = new NavigationPage(new LoginView());
        }