Refactor distributed cache & merge Shazwazza's DataBaseServerMessenger

src/Umbraco.Core/Sync/IServerAddress.cs

@@ -3,10 +3,13 @@
 namespace Umbraco.Core.Sync
 {
     /// <summary>
-    /// An interface exposing a server address to use for server syncing
+    /// Provides the address of a server.
     /// </summary>
     public interface IServerAddress
     {
+        /// <summary>
+        /// Gets the server address.
+        /// </summary>
         string ServerAddress { get; }
 
         //TODO : Should probably add things like port, protocol, server name, app id