Updates medical rig and adds medical suit storage unit

Maybe people will use this rig now that it doesn't look like absolute shit yes?

Sprites by tokiko.

Before

![ss 2014-06-25 at 03 17 02](https://cloud.githubusercontent.com/assets/7247232/3384081/e4431ba0-fc53-11e3-9b4d-fbac537a1df9.png)
![ss 2014-06-25 at 03 17 43](https://cloud.githubusercontent.com/assets/7247232/3384082/e621802e-fc53-11e3-8121-82c31043cf35.png)

After

![ss 2014-06-25 at 03 16 23](https://cloud.githubusercontent.com/assets/7247232/3384083/e9f74dbe-fc53-11e3-88ba-7cb810a6d95f.png)
![ss 2014-06-25 at 02 59 59](https://cloud.githubusercontent.com/assets/7247232/3384085/eb791dfc-fc53-11e3-826f-91f682dbf8ba.png)