Make user ID 11 a temporary 'administrator'

To allow someone else than the challenge creator to draw the winner of
the challenge.

This is a TEMPORARY change that will be reverted once the draw is made.

Tevling/Components/ChallengeCard.razor

@@ -50,7 +50,7 @@
                         <span>Congrats to all participants 👏</span>
                         <span>Now it's time to draw a winner 🏆</span>
                     </div>
-                    @if (Challenge.CreatedById == AthleteId)
+                    @if (Challenge.CreatedById == AthleteId || IsAdmin)
                     {
                         <button class="btn btn-primary mt-auto" data-bs-toggle="modal" data-bs-target="#drawWinner"
                                 @onclick:stopPropagation="true">

Tevling/Components/ChallengeCard.razor.cs

@@ -13,6 +13,7 @@ public partial class ChallengeCard : ComponentBase
 
     private DateTimeOffset? CurrentBrowserTime { get; set; }
     private ScoreBoard? ScoreBoard { get; set; }
+    private bool IsAdmin => AthleteId == 11; // TEMP HACK
 
     private string MeasurementIcon
     {