add SCM status to Properties dialog

@devoncarew  Please take a look.

![image](https://f.cloud.github.com/assets/756988/2304539/8ce4c6ca-a225-11e3-9d1c-f14ee77d9340.png)
![image](https://f.cloud.github.com/assets/756988/2304543/d246bc5a-a225-11e3-921f-dab5f5ac201d.png)
![image](https://f.cloud.github.com/assets/756988/2304541/bad35434-a225-11e3-922e-7e036f2b813f.png)