Fixed action bar spinner style

![screenshot_2014-08-27-09-41-29](https://cloud.githubusercontent.com/assets/5498618/4062600/1ae52584-2e01-11e4-8db3-39e4249111c3.png)
Background is based off of the Action bar color. So it should work on release and debug

There's an extra 's' on this line. Don't think it should be there