Added Logger, Supertest changes in Login process
- Logs are managed by Winston
- Supertest for creating request in test
- change Login process for test purpose
Mysql - postgre
Refactor DB schema #1
Endpoints for debts, friends, debt Types
DB Scheme edit, Debt filters undo change, tests
	- DB: debt lender_id, borrower_id may be null
	- filters: status back to original
	- model tests
Login, Registration updated... Need more work on it
Auth: login and register
Format Responses
Procfile
remove Config, set process.env
Replace Redis Session with jwt token
Merge branch 'develop' of github.com:visvk/ioweyou-backend into develop