Corrected Entry password not synchronized bug

Created a new welcome page to be shown on first launch
Added descriptive text in main menu pages

ModernKeePass/MainPage.xaml.cs

@@ -1,5 +1,6 @@
 using Windows.UI.Xaml.Controls;
 using Windows.UI.Xaml.Navigation;
+using ModernKeePass.Pages;
 using ModernKeePass.ViewModels;
 
 // The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238
@@ -22,6 +23,7 @@ namespace ModernKeePass
         {
             base.OnNavigatedTo(e);
             DataContext = new MainVm(Frame, MenuFrame);
+            if (Model.SelectedItem == null) MenuFrame.Navigate(typeof(WelcomePage));
         }
 
         private void ListView_SelectionChanged(object sender, SelectionChangedEventArgs e)