Fixed

• Blog slugs (folder path) are now a bit neater: Apostriphes do not turn into dashes, and leading and trailing dashes are removed. So, where the blog post "It's good!" would have previously looked like "/2016/06/02/it-s-good-/", it will now look like "/2016/06/02/its-good/". Thanks @Ferki! Github #507 Github #508