Fix id of Items, saving

CHDataManagement/Generator/Post Lists/PostContentGenerator.swift

@@ -44,7 +44,7 @@ struct PostContentGenerator {
     }
 
     private var postDescription: String {
-        "content of post \(post.id) (\(language.shortText))"
+        "content of post \(post.identifier) (\(language.shortText))"
     }
 
     private func handleLink(

CHDataManagement/Generator/Post Lists/PostListPageGenerator.swift

@@ -95,7 +95,7 @@ final class PostListPageGenerator {
             post: post).generate()
         
         return FeedEntryData(
-            entryId: post.id,
+            entryId: post.identifier,
             title: localized.title,
             textAboveTitle: post.dateText(in: language),
             link: linkUrl,