LPS-41661 apply bootstrap markup to search portlet 

Hey Nate, this is how it looks now. Cheers!
![search_results_-_home_-_liferay-2](https://f.cloud.github.com/assets/203395/1405684/60a128c0-3d39-11e3-87e8-574452d8815c.jpg)
![search_results_-_home_-_liferay-2 2](https://f.cloud.github.com/assets/203395/1405685/60a14a58-3d39-11e3-958b-20f2c37a06af.jpg)

(the current one can be seen here: http://master-demo.liferay.org.es/web/architecture/home?p_p_id=3&p_p_lifecycle=0&p_p_state=maximized&p_p_mode=view&p_p_col_id=column-2&p_p_col_count=3&_3_struts_action=%2Fsearch%2Fsearch&_3_redirect=%2Fweb%2Farchitecture%2Fhome&_3_keywords=m&_3_groupId=0)