Added salt to hashed password, relates to issue #72
- Added supporting functions in auth.
- Added interfaces in users
- Added tests
Aligned tests, relates to issue #72
- Added supporting functions in auth.
- Added interfaces in users
- Added tests
Removed unused ref, relates to issue #72
Merge pull request #75 from joola/feature/issue#72

Added salt to hashed password, resolves issue #72.