back ported template repo and file service updates

src/Umbraco.Core/Models/TemplateNode.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+
+namespace Umbraco.Core.Models
+{
+    /// <summary>
+    /// Represents a template in a template tree
+    /// </summary>
+    public class TemplateNode
+    {
+        public TemplateNode(ITemplate template)
+        {
+            Template = template;
+            Children = new List<TemplateNode>();
+        }
+
+        /// <summary>
+        /// The current template
+        /// </summary>
+        public ITemplate Template { get; set; }
+
+        /// <summary>
+        /// The children of the current template
+        /// </summary>
+        public IEnumerable<TemplateNode> Children { get; set; }
+
+        /// <summary>
+        /// The parent template to the current template
+        /// </summary>
+        /// <remarks>
+        /// Will be null if there is no parent
+        /// </remarks>
+        public TemplateNode Parent { get; set; }
+    }
+}