Feature logging

@rynowak @yishaigalatzer 

I haven't rebased to the newest stuff yet.
ReflectedActionConstraints to text and attribute routing still need to be considered.

Sample graph view
![image](https://cloud.githubusercontent.com/assets/3495894/3726525/0bf25396-1694-11e4-9c1b-cb32b48c0008.png)

Sample text view
![image](https://cloud.githubusercontent.com/assets/3495894/3726575/a0a81f20-1694-11e4-9568-59e4e77a7722.png)

I don't love this because it encourages the wrong usage. 

The 'right way' to do this is already to DI the log factory. Routing can't follow this pattern because nothing there is created with DI.