Opens the roadmap to v1.1.0 (BC break warnings!)

- The user model, should use password_hash functions instead of md5 algorithm
- install/ has been moved to data/ (closes #6)
- history is saving :rocket: (closes #9)
- Skeleton\\Controller classes was renamed:
  - PublicController -> Controller
  - Other classes had the Controller suffix removed
- Some other changes

@TODO
reorganize the modules directory (almost all files)