Topic post and other desktop simplifications

Simplifying topic page, effects desktop theme overall, removes grey background, removes bootstrap.scss

![screenshot 2013-10-19 09 22 45](https://f.cloud.github.com/assets/1681963/1366238/422f226e-38c2-11e3-9058-bfba8325dc0c.png)
![screenshot 2013-10-19 09 22 59](https://f.cloud.github.com/assets/1681963/1366239/42356a98-38c2-11e3-8b7c-2478f8e79ee6.png)
![screenshot 2013-10-19 09 23 14](https://f.cloud.github.com/assets/1681963/1366240/423c27ac-38c2-11e3-96f3-9bf0d42a157c.png)
![screenshot 2013-10-19 09 23 34](https://f.cloud.github.com/assets/1681963/1366241/4240163c-38c2-11e3-9aac-dce3aa2ab141.png)