[#64116358] When process_CSV raises an exception the import failed
[#64466776]failing specs
[#64466776]wider gender convertion
refactor environment specific behaviour to a method
[#64319612] use constant instead of variable

This hash certanly allocates a lot of memory. Extract it to a constant
to avoid multiple allocations
[#64319612] use symbol for repeated string
[#64319612] Ruby-Mass Gem