It's now possible to minimize code view of files.

I added a small triangle in the header of each file to toggle the code view. I find it useful to be able to minimize large files that I'm not interested in. Code generated files like like `*.designer.cs` for example.
![image](https://f.cloud.github.com/assets/160935/2277209/b0794baa-9f3d-11e3-9933-0c159f8ccd6b.png)