Comments fixed
BrianCarper mentioned via Twitter the broken comments. I've started to fixed them.
Adding a comment should work. But there are some problems with editing them via admin page. Also the main page still shows 0 Comments.
I've added a comment entity to the Google App Engine Datastore. The comments are connected to the posting via the post-id. At the original cow-blog the comments are part of each post. I've separated them because I've got some performace problems at start-up. But that's the reason the main page shows 0 Comments.
I've also analysed - while uploading to Google App Engine - the edit problem: There's nothing which matches the /edit-comment request.
Changes are committed: 9465b59