HistoryView: Adds ability to delete history items

App/Backend/History/HistoryItem.swift

@@ -12,13 +12,13 @@ struct HistoryItem: Hashable, Identifiable
     var url: URL
     var title: String
     var lastVisited: Date
-    var id: ObjectIdentifier
+    var id: NSManagedObjectID
     
     init(entity: HistoryItemEntity) {
         self.url = entity.url ?? URL(string: "about:blank")!
         self.lastVisited = entity.lastVisited ?? Date()
         self.title = entity.title ?? ""
-        self.id = entity.id
+        self.id = entity.objectID
     }
     
     // For testing/previews
@@ -26,6 +26,6 @@ struct HistoryItem: Hashable, Identifiable
         self.url = url
         self.title = title
         self.lastVisited = lastVisited
-        self.id = ObjectIdentifier(NSUUID())
+        self.id = NSManagedObjectID()
     }
 }