BUG: Routing breaks if there is a dot in the name of an article

It seems like the link to the article and the article name are generated using two different methods, one of which removes the dot in the filename and the other replaces it with a dash. For instance I have an article named `Having fun with Applescript and Terminal.app`, the link is `http://localhost:9292/2010/06/30/having-fun-with-applescript-and-terminalapp/` but it should be `http://localhost:9292/2010/06/30/having-fun-with-applescript-and-terminal-app/` so if I click the link I get an error saying that the link is broken.

Reproduce the broken localhost route using an article title containing a dot, such as “Having fun with Applescript and Terminal.app.” Trace where the article link and name are generated and where the route matches the slug; done means both use the same slug and the example link loads successfully.

Written by the indexing model from the issue text.