make compatibility filtering select prettier (bug 1073278)

Pull in styles from the curation tools.

- Desktop: move it to the top right.
- Mobile: center it.

# Search 
![screen shot 2014-09-25 at 7 11 52 pm](https://cloud.githubusercontent.com/assets/674727/4414951/87f1f9a8-4522-11e4-867c-5af890ecf3c0.png)
![screen shot 2014-09-25 at 7 11 55 pm](https://cloud.githubusercontent.com/assets/674727/4414952/88c78af0-4522-11e4-9bd2-20e8fd4df4a0.png)

# Category
![screen shot 2014-09-25 at 7 11 47 pm](https://cloud.githubusercontent.com/assets/674727/4414956/904a8f8e-4522-11e4-8e48-7eec6132f2b4.png)
![screen shot 2014-09-25 at 7 11 43 pm](https://cloud.githubusercontent.com/assets/674727/4414957/916790c4-4522-11e4-9170-3a59c625c4fd.png)

# App List

![screen shot 2014-09-25 at 7 11 24 pm](https://cloud.githubusercontent.com/assets/674727/4414962/97648e46-4522-11e4-9121-50be64103e66.png)
![screen shot 2014-09-25 at 7 11 39 pm](https://cloud.githubusercontent.com/assets/674727/4414963/983220cc-4522-11e4-9d62-e458e3658fab.png)





Ah, nice, this is the missing trick I had not thought about when I tried to do this.