[WIP] factories instead of create_* function
[WIP] better tests
[WIP] better tests
[WIP] better tests
[WIP] form validation factory boy
[WIP] cherry pick and merge from upstream
subcategory slug contain parent category name
factories instead of create_* functions
flake8
cleaned after review
Merge pull request #294 from ar4s/feature/factory-boy

Added factory_boy library to tests