Searchbar fixes:

- align all the other right hand elements with the loupe.
- height of the searchbar should be the same as the list.
- searchbar button now has consistent margins.

Old:
![screen shot 2014-12-22 at 12 11 51 pm](https://cloud.githubusercontent.com/assets/81969/5528229/d41a30c0-89d3-11e4-8280-97f32ea1dea9.png)

New:
![screen shot 2014-12-22 at 12 12 32 pm](https://cloud.githubusercontent.com/assets/81969/5528230/d41a9466-89d3-11e4-9bdc-b92c6e5d1994.png)