Updated admin page to be more streamlined and added the beginning of the blogging features

OpenArchival.DataAccess/Models/ArtifactEntry.cs

@@ -64,6 +64,11 @@ public class ArtifactEntry
     public int ArtifactGroupingId { get; set; }
 
     public required ArtifactGrouping ArtifactGrouping { get; set; }
+    
+    /// <summary>
+    /// For keeping track of how many of this artifact are owned
+    /// </summary>
+    public int Quantity { get; set; }
 
     public override string ToString()
     {