change populateAnswers for profile to work with registrants instead of registrations
cleaning up and removing most 'registrant' related endpoints
getting rid of get set conference cost id functions that were lingering around
small fixes dealing with payment gateways
getting rid of update registrant process and test because they are not needed
adding the two timestamps to registrant costs
renaming incorrect fields in registrant cost queries file
general fix up of imports and formatting
adding to seed data to reflect new schema changes