Fixed bug: active_projects needs to be an iterable
Added factory boy
Added user/person factory
Added project factory
Added yearweek factory
Added bare factories for the remaining models
Support single-digit week numbers in the url.
There must be a better way
Test coverage of models.py is at 100% again
Increased views.py test coverage
Merge pull request #3 from nens/reinout-more-tests

Added more tests, got the test infrastructure reasonably up to date