Update styles for white/black-list builder

#### Story ####
- https://www.pivotaltracker.com/story/show/68459514

#### Notes ####
- updated white/black-list header styles
- fixed icons within search results
- fixed navbar active states

#### Screenshots ####
- mockup
  - ![screen shot 2014-05-14 at 11 54 53 am](https://cloud.githubusercontent.com/assets/456952/2973686/10f56b84-db80-11e3-8578-6d6f07574903.png)
- updated styling
  - ![screen shot 2014-05-14 at 11 30 14 am](https://cloud.githubusercontent.com/assets/456952/2973688/16864aa0-db80-11e3-9e67-85624ad589f3.png)