fixes Brick looking different on some devices

fixes #295 by lifting the 9.png left-bottom-border pixel up.

Devices which will be (at least) fixed are:
 * Nexus S (4.1.2)
 * Nexus 7 (4.2.2 - 2012 Edition)

### not fixed
![screenshot_2013-08-20-13-56-38](https://f.cloud.github.com/assets/1064928/993770/c78650be-09a0-11e3-836d-03257bf1fbb2.png)
### fixed
![screenshot_2013-08-20-13-55-48](https://f.cloud.github.com/assets/1064928/993771/cce0666c-09a0-11e3-9b22-d6c77f21611b.png)