Add USA Contacts scraper, some merged data

The records below are affecting the ids and acronyms. issue146 can't be merged till these are resolved.  
-National Oceanic and Atmospheric Administration
-National Park Service
-Bureau of Indian Affairs
-Department of Housing and Urban Development
-U.S. Citizenship & Immigration Services
@khandelwal This `common_requests` array should get moved to the manual data, right?