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
When I run scraper.py common_requests shows up in the YAML file. It's probably getting taken out at a different stage.