Show latest blog post link on the main page

I created a pull request into development branch. @mitar, can you take a look and comment on?
Aha. Now I see. You have only one post in the collection. I would store all, but just push to the client the latest one. This would give us free backup of the blog, and we would be able to have a count of how many blog posts are there which we will be able to display to the user. (See how GitHub has it.) Having a count is useful because users can get a feeling how many things they missed.