Minor mobile fixes

 - Larger touchable area for search reset button
 - Replace loading spinner, on phones, with a loading bar to avoid overflow on search field, see: 

![screen shot 2014-09-05 at 10 35 39](https://cloud.githubusercontent.com/assets/21686/4317214/ae4d59d4-3f10-11e4-8d97-76cdf890a4b6.png)