Upgraded Django REST Framework version.
Removed unexistent `django-colortools` package from project settings.
Fixing indentation.
Fixed unit tests models loading in `utils` test module.
Upgraded Selenium version required for tests.
`test_settings.py` file cleaned.
Fixed unicode error in `ProjectPhase`.
Some fixes in `bb_projects` app.
Merge pull request #276 from jose-lpa/refaktor

Fixed several failing tests and packages