prevent colon from getting in the name and breaking windows machines

Management/Models/Local/Assignment/LocalAssignment.cs

@@ -8,8 +8,17 @@ namespace LocalModels;
 
 public record LocalAssignment
 {
-  // public ulong? CanvasId { get; init; } = null;
-  public string Name { get; init; } = "";
+  private string _name = "";
+  public string Name
+  {
+    get => _name;
+    init
+    {
+      if (value.Contains(':'))
+        throw new AssignmentMarkdownParseException("Name cannot contain a ':' character, it breaks windows filesystems " + value);
+      _name = value;
+    }
+  }
   public string Description { get; init; } = "";
   // public bool LockAtDueDate { get; init; }
   public DateTime? LockAt { get; init; }
@@ -18,7 +27,6 @@ public record LocalAssignment
   public IEnumerable<string> SubmissionTypes { get; init; } = Array.Empty<string>();
   public IEnumerable<RubricItem> Rubric { get; init; } = Array.Empty<RubricItem>();
   public int PointsPossible => Rubric.Sum(r => r.IsExtraCredit ? 0 : r.Points);
-
   public string GetRubricHtml()
   {
     var output = "<h1>Rubric</h1><pre><code class=\"language-json\">[\n";

Management/Services/Files/LoadMarkdownCourse.cs

@@ -37,8 +37,6 @@ public class CourseMarkdownLoader
       throw new LoadCourseFromFileException(errorMessage);
     }
 
-
-
     LocalCourseSettings settings = await loadCourseSettings(courseDirectory);
     var modules = await loadCourseModules(courseDirectory);
 
@@ -73,7 +71,7 @@ public class CourseMarkdownLoader
       modulePaths
         .Select(loadModuleFromPath)
     );
-    return modules;
+    return modules.OrderBy(m => m.Name);
   }
 
   private async Task<LocalModule> loadModuleFromPath(string modulePath)