Shade UI

![shade_hud](https://cloud.githubusercontent.com/assets/7573912/4546228/bdcf611e-4e41-11e4-8298-1c9f3049cb27.png)

For some reason I couldn't make the Pull1 icon appear when the shade is
pulling something, despite using the same lines as with the construct UI
code. So instead I made the icon show all the time. If someone can make
it work properly that'd be great.