Blogpost Path Uniqueness #213

Problem

Currently, the title of a blog post will become it's path on the website, for instance a blog post with metadata title "My first Terasology blog!" will be served at /blog/my-first-terasology-blog. This means, that the title needs to be unique, which doesn't really make sense. For instance, if somebody today would write a blog post and title it the same as a blog post written 2 years ago, we would have a conflict there which might not be resolved deterministically.

Proposal

Use the date in combination with the title to avoid the requirement on titles to be unique.