New color to brush converter

New boolean to visibility converter
Base class to handle property changes notifications for all View Models
Template selector to handle a different first item in listviews or gridviews

ModernKeePass/Pages/OpenDatabasePage.xaml.cs

@@ -63,8 +63,6 @@ namespace ModernKeePass.Pages
             if (databaseVm == null) return;
             databaseVm.SelectedVisibility = Visibility.Visible;
             databaseVm.Name = file.Name;
-            databaseVm.NotifyPropertyChanged("SelectedVisibility");
-            databaseVm.NotifyPropertyChanged("Name");
         }
 
         private void PasswordUserControl_PasswordChecked(object sender, EventArgs e)