CU-2 Finished create user API call with tests

API call to crate users. Unit tests included. 
Also made a file to build the dynamodb tables

See
https://confluence.tinynova.com/display/CU/API

and ticket
https://jira.tinynova.com/browse/CU-2
This has always bothered me. You should consider creating a form factory so you can remove this dependency.