spacing on search titles should have larger gap between sections

[finishes: #76946038]

Thanks @rheinwein for the graphic.

![screen shot 2014-12-02 at 2 45 08 pm](https://cloud.githubusercontent.com/assets/923211/5270642/8555998a-7a32-11e4-9692-558b2c7a8ad7.png)

We could solve this in 2 ways: 
1. just update the search-title to have more space before it than after
2. set a bottom margin on the results sections and adjust the title

I decided to go with the later it felt like a more consistent design approach so i created the attribute selector -- if you are saying its not specific enough i could see changing it to a  > section[class$='-results']