Feature #49: Active Directory Managed Groups

Document Template Attachments, Device Batches, Device Profiles and User
Flags can be associated with an Active Directory group. This AD group is
then automatically synchronized with relevant User/Machine accounts.
Contains various other UI tweaks and configuration enhancements.

Disco.Services/Extensions/EnumerableExtensions.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Disco
+{
+    public static class EnumerableExtensions
+    {
+
+        public static IEnumerable<List<TSource>> Chunk<TSource>(this IEnumerable<TSource> source, int ChunkSize)
+        {
+            List<TSource> buffer = new List<TSource>(ChunkSize);
+
+            foreach (var item in source)
+            {
+                buffer.Add(item);
+
+                if (buffer.Count == ChunkSize)
+                {
+                    yield return buffer;
+                    buffer = new List<TSource>();
+                }
+            }
+
+            // Return any additional items
+            if (buffer.Count > 0)
+                yield return buffer;
+        }
+
+    }
+}