Clean code, fix pep8 errors, and softcode the objects manager: change Model.objects by model_class._default_manager
Softcode view_name in the widget ChainedSelect, and fix pep8 errors and a pyflake error
Reorder the imports
Remove ipdbs :-P
Ready to new release
Merge pull request #43 from goinnn/master

Softcode the view_name of the ChainedSelect widget