Some make up for the pages

* colors for the homepage
* nicer layout for blog posts
* extended styles for docs and docs-sidebar

**Screenshots:**

![home_sabre-dav 20140424](https://cloud.githubusercontent.com/assets/1384635/2788468/c6aace8c-cb9b-11e3-9f77-0b83d1a78478.png)

![docs_sabre-dav 20140424](https://cloud.githubusercontent.com/assets/1384635/2788473/cf5a107e-cb9b-11e3-8df1-7c477ff2f84f.png)

![blog_sabre-dav 20140424](https://cloud.githubusercontent.com/assets/1384635/2788477/d58dbcca-cb9b-11e3-89b0-2a25727bd3d7.png)