fix cashbook - month and year selection

src/Koogle.Web/Components/Pages/Admin/GifImportDialog.razor

@@ -23,6 +23,7 @@
             <MudCheckBox @bind-Value="_circle" Label="Kranz" Color="Color.Primary" />
             <MudCheckBox @bind-Value="_bell" Label="Glocke" Color="Color.Warning" />
             <MudCheckBox @bind-Value="_gutter" Label="Rinne" Color="Color.Error" />
+            <MudCheckBox @bind-Value="_noWood" Label="kein Holz" Color="Color.Tertiary" />
         </MudStack>
 
         <MudTextField @bind-Value="_description"

src/Koogle.Web/Components/Pages/CashBook/MembershipFeeDialog.razor

@@ -13,13 +13,15 @@
             <MudSelect T="int" @bind-Value="_selectedMonth" Label="Monat" Style="width: 150px;">
                 @for (int m = 1; m <= 12; m++)
                 {
-                    <MudSelectItem Value="@m">@GetMonthName(m)</MudSelectItem>
+                    var month = m;
+                    <MudSelectItem Value="@month">@GetMonthName(month)</MudSelectItem>
                 }
             </MudSelect>
             <MudSelect T="int" @bind-Value="_selectedYear" Label="Jahr" Style="width: 120px;">
                 @for (int y = DateTime.Today.Year; y >= DateTime.Today.Year - 2; y--)
                 {
-                    <MudSelectItem Value="@y">@y</MudSelectItem>
+                    var year = y;
+                    <MudSelectItem Value="@year">@year</MudSelectItem>
                 }
             </MudSelect>
         </MudStack>