Support redirect to make it analytics friendly
e.g.
/blog/2012/3/28.html will be redirected to
/blog/2012/3/28/best-practice-how-to-use-if-and-return.htmlEdited by Sutou Kouhei
e.g.
/blog/2012/3/28.html will be redirected to
/blog/2012/3/28/best-practice-how-to-use-if-and-return.html