Extracted some pages to their own assembly and finished the artifact display page code

OpenArchival.Blazor/Components/Pages/Administration/ArchiveItems/AddArchiveGroupingComponent.razor

@@ -2,6 +2,7 @@
 @using OpenArchival.Blazor.Components.Pages.Administration.Categories
 @using OpenArchival.DataAccess;
 @using System.ComponentModel.DataAnnotations
+@using MudBlazor
 
 @inject IDialogService DialogService
 @inject NavigationManager NavigationManager;
@@ -193,6 +194,9 @@
         {
             // The data entry should only be shown if a category has been selected
             _isFormDivVisible = true;
+        } else
+        {
+            _isFormDivVisible = false;
         }
 
         if (Model is not null)
@@ -223,11 +227,11 @@
 
         if (IsValid && ClearOnPublish)
         {
-            Model = new();
+            Model = new(); 
             await _uploadComponent.ClearClicked.InvokeAsync();
             StateHasChanged();
         }
-
+        
         await GroupingPublished.InvokeAsync(oldModel); 
     }
 
@@ -343,10 +347,10 @@
         return categories;
     }
 
-    private async void OnDeleteEntryClicked(int index)
+    private async void OnDeleteEntryClicked((int index, string filename) data)
     {
-        Model.ArtifactEntries.RemoveAt(index);
-        _uploadComponent.Files.RemoveAt(index);
+        Model.ArtifactEntries.RemoveAt(data.index);
+        _uploadComponent.RemoveFile(data.filename);
         StateHasChanged();
     }
 }