* setup referral route
* referredBy
* add user id
* modify user query
* separate optional field from userInfo
* get current reward on init of satellite gui
* remove unsed code
* fix format
* only apply 0 credit on registration
* only pass required information for rewards
* fix time parsing
* fix test and linter
* rename method
* add todo
* remove user referral logic
* add null check and fix format
* get current offer
* remove partnerID on CreateUser struct
* fix storj-sim user creation
* only redeem credit when there's an offer
* fix default offer configuration
* fix migration
* Add helper function for get correct credit duration
* add comment
* only store userid into user_credit table
* add check for partner id to set correct offer type
* change free credit to use invitee credits
* remove unecessary code
