[#79] AppDbContext: Use compiled queries

Elwig/Dialogs/DeliverySplittingDialog.xaml.cs

@@ -44,11 +44,7 @@ namespace Elwig.Dialogs {
         }
 
         protected override async Task OnRenewContext(AppDbContext ctx) {
-            ControlUtils.RenewItemsSource(MemberInput, await ctx.Members
-                .Where(m => m.IsActive)
-                .OrderBy(m => m.Name)
-                .ThenBy(m => m.GivenName)
-                .ToListAsync());
+            ControlUtils.RenewItemsSource(MemberInput, await ctx.FetchMembers().ToListAsync());
             ControlUtils.RenewItemsSource(DeliveryInput, await ctx.Deliveries
                 .Where(d => d.DateString == $"{_delivery.Date:yyyy-MM-dd}" && d.ZwstId == _delivery.ZwstId)
                 .OrderBy(d => d.LsNr)