Gets the messages being pumped out to the UI. Updates the ContentService and MediaServices to have a SaveWithStatus in order to determine the response, we'll need to update most of the methods to also have this OperationStatus. Now messages can be added to the UI for Saving & publishing for media and content services, we'll need to update more to support everything.

src/Umbraco.Web/PublishedCache/ContextualPublishedCache.cs

@@ -24,15 +24,6 @@ namespace Umbraco.Web.PublishedCache
             UmbracoContext = umbracoContext;
         }
 
-        /// <summary>
-        /// Informs the contextual cache that content has changed.
-        /// </summary>
-        /// <remarks>The contextual cache may, although that is not mandatory, provide an immutable snapshot of
-        /// the content over the duration of the context. If you make changes to the content and do want to have
-        /// the cache update its snapshot, you have to explicitely ask it to do so by calling ContentHasChanged.</remarks>
-        public virtual void ContentHasChanged()
-        { }
-
         /// <summary>
         /// Gets a content identified by its unique identifier.
         /// </summary>