Adds Dictionary and Language implementations for U4-929 and U4-930

src/Umbraco.Core/Models/DictionaryTranslation.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Reflection;
+using Umbraco.Core.Models.EntityBase;
+
+namespace Umbraco.Core.Models
+{
+    public class DictionaryTranslation : Entity
+    {
+        private Language _language;
+        private string _value;
+
+        public DictionaryTranslation(Language language, string value)
+        {
+            _language = language;
+            _value = value;
+        }
+
+        public DictionaryTranslation(Language language, string value, Guid uniqueId)
+        {
+            _language = language;
+            _value = value;
+            Key = uniqueId;
+        }
+
+        private static readonly PropertyInfo LanguageSelector = ExpressionHelper.GetPropertyInfo<DictionaryTranslation, Language>(x => x.Language);
+        private static readonly PropertyInfo ValueSelector = ExpressionHelper.GetPropertyInfo<DictionaryTranslation, string>(x => x.Value);
+
+        public Language Language
+        {
+            get { return _language; }
+            set
+            {
+                _language = value;
+                OnPropertyChanged(LanguageSelector);
+            }
+        }
+
+        public string Value
+        {
+            get { return _value; }
+            set
+            {
+                _value = value;
+                OnPropertyChanged(ValueSelector);
+            }
+        }
+    }
+}