update country select questions, add fixtures and update tests
remove and replace redundant code to reflect new country names
remove embassy code as will be using WW API
remove embassy code and replace with API code
make code more readable, fix issues with new country names
fixed the issue with wrongly passing string values (thanks Alex)
Merge pull request #544 from alphagov/marriage_abroad_to_use_ww-api

Making Marriage Abroad Smart-answer use WW API instead of yucky yaml