Drawer missing border when docked right

[PolGuixe]

• I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

The drawer component should apply the right border depending on which side is anchored when it is docked i.e. permanent or persistent.

Current Behavior

The border is always applied to the right side of the drawer even when it is not anchored left.

See picture, and the CSS rules applied:

Steps to Reproduce (for bugs)

1. Use the following drawer:

<Drawer type="permanent" anchored="right"><div>Hello, World!</div></Drawer

2. Check CSS rules applied

Your Environment

Tech	Version
Material-UI	1.0.0-beta11
React	15.6.2
browser	Chrome
etc	Mac OS