Fix for: Star ratings pixelated, too generous #4621

Refactored the star ratings component used in review articles and (facia) trails to allow for a better rendering on Android phones (and windows 8.1).

Problem occurred while repeating an SVG image as background image.

![screenshot_2014-07-28-13-02-57](https://cloud.githubusercontent.com/assets/1492162/3720145/e3acb406-164f-11e4-8745-e7b10d692cad.png)
![screen shot 2014-07-28 at 13 04 12](https://cloud.githubusercontent.com/assets/1492162/3720148/eabacf62-164f-11e4-9fe3-82ab98595fae.png)


![](http://media.giphy.com/media/2Fazg2n1iLyYRHUaY/giphy.gif)
Does it need to be nested?