Merge pull request #54 from chopachom/signup_with_service

New signup flow
Merge pull request #55 from chopachom/signup_with_service

chore(userModel): update docs to pass ngdoc generation
Merge pull request #56 from chopachom/signup_with_service

Whitelisting oauth services that can signup user + google can extract first and last names
fix(test): group test now uses test database