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

OpenArchival.DataAccess/Migrations/ArchiveDbContextModelSnapshot.cs

@@ -474,6 +474,9 @@ namespace OpenArchival.DataAccess.Migrations
 
                     NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
 
+                    b.Property<int?>("ArtifactGroupingId")
+                        .HasColumnType("integer");
+
                     b.Property<string>("OriginalName")
                         .IsRequired()
                         .HasColumnType("text");
@@ -487,6 +490,8 @@ namespace OpenArchival.DataAccess.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("ArtifactGroupingId");
+
                     b.HasIndex("ParentArtifactEntryId");
 
                     b.ToTable("ArtifactFilePaths");
@@ -690,9 +695,14 @@ namespace OpenArchival.DataAccess.Migrations
 
             modelBuilder.Entity("OpenArchival.DataAccess.FilePathListing", b =>
                 {
+                    b.HasOne("OpenArchival.DataAccess.ArtifactGrouping", null)
+                        .WithMany("ChildFilePathListings")
+                        .HasForeignKey("ArtifactGroupingId");
+
                     b.HasOne("OpenArchival.DataAccess.ArtifactEntry", "ParentArtifactEntry")
                         .WithMany("Files")
-                        .HasForeignKey("ParentArtifactEntryId");
+                        .HasForeignKey("ParentArtifactEntryId")
+                        .OnDelete(DeleteBehavior.Cascade);
 
                     b.Navigation("ParentArtifactEntry");
                 });
@@ -705,6 +715,8 @@ namespace OpenArchival.DataAccess.Migrations
             modelBuilder.Entity("OpenArchival.DataAccess.ArtifactGrouping", b =>
                 {
                     b.Navigation("ChildArtifactEntries");
+
+                    b.Navigation("ChildFilePathListings");
                 });
 
             modelBuilder.Entity("OpenArchival.DataAccess.ArtifactStorageLocation", b =>