Style pages

Trello: https://trello.com/c/pllNosV1/68-give-pages-basic-styling

Styling is yet to be added to journalists/index and announcements/new

![add-styling](https://cloud.githubusercontent.com/assets/4560985/5299590/cef25ee2-7b96-11e4-8fa7-1beea75e8219.gif)

I prefer the `application.css.scss` to be just a manifest, importing in other files. Can you extract this layout code to a `layout.css.scss` and import that here