Dark sidebar

This is a restyled sidebar to be cleaner, more concise and takes design queues for other apps which use a sidebar such as Path and Facebook. One of the reasons for reducing the size of the list items is that there are so many apps that they do not fit onto a typical screen. The list items are still larger than the equivalents in Path and Facebook.

Decided against a colour for every app for the following reasons:

1. There are too many apps to be able to remember the colour for each one. Thus the advantage of the colours (being able to spot the item you want quickly) is quickly diminished. I'd expect this would work fine with up to 5-6 items. 

2. Having a separate colour for each item/app somewhat dilutes the brand. Which app are you in on each page? It's difficult to tell.