Stay on PagesController#index on new page instantiation.

Fixes #113

Should we remove the `#new` action in the pages controller and all logic for it?

![screen shot 2014-02-10 at 10 45 02 pm](https://f.cloud.github.com/assets/96776/2134604/d3d22758-92e9-11e3-8021-a7fda0354ebd.png)