Various aesthetic overhauls

- This overhauls the appearance of the 'A showcase of awesome apps...' area to be more swag-oriented.
- I've decided to move the .page-content container out of the main layout template to accommodate the changes. It's trivial enough to just extend that class for new page containers.
- Refined favicon
- Refined the twitter anchor

![](http://i.imgur.com/aoQea6L.png)