Improve scores UI (fixes #51)

Hello, this is a patch which hopes to fix issue #51, which was suggest improvements to the scores UI (stars and rating numbers).

This patch adds grey empty stars beneath the existing yellow stars to show the maximum star count,
and fixes the rating text so it doesn't overlap with the stars.

Here are screenshots of the updated UI:

![](https://sites.google.com/site/bl0ckeduserssoftware/softman1.png)
![](https://sites.google.com/site/bl0ckeduserssoftware/softman2.png)