Fixes EntityController to have a correct model mapper and removes invalidly named 'map' method. Removes the key from entity since we don't need it. Added some notes to the controller since we have to implement security for the results.

src/Umbraco.Web/Models/ContentEditing/EntityBasic.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Umbraco.Web.Models.ContentEditing
+{
+    [DataContract(Name = "entity", Namespace = "")]
+    public class EntityBasic
+    {
+        [DataMember(Name = "name")]
+        public string Name { get; set; }
+
+        [DataMember(Name = "id")]
+        public int Id { get; set; }
+        
+        [DataMember(Name = "icon")]
+        public string Icon { get; set; }
+    }
+}