can create and drag and drop pages

Management.Test/Markdown/FileStorageTests.cs

@@ -272,7 +272,7 @@ public class FileStorageTests
           Pages = [
             new () {
               Name = "test page persistence",
-              DueDateForOrdering = new DateTime(),
+              DueAt = new DateTime(),
               Text = "this is some\n## markdown\n"
             }
           ]

Management.Test/Markdown/PageMarkdownTests.cs

@@ -9,7 +9,7 @@ public class PageMarkdownTests
     {
       Name = "test title",
       Text = "test text content",
-      DueDateForOrdering = new DateTime()
+      DueAt = new DateTime()
     };
 
     var pageMarkdown = page.ToMarkdown();