Clarified mixin order when combining CsrfExemptMixin and LoginRequiredMixin
Merge pull request #47 from erikr/patch-1

Clarified mixin order when combining CsrfExemptMixin and LoginRequiredMixin
Merge remote-tracking branch 'upstream/master' into orderable-list-mixin
Add OrderableListMixin.get_orderable_columns() method
Raise ImproperlyConfigured if OrderableListMixin.orderable_columns is None
Add OrderableListMixin.get_orderable_columns_default() + tests
Refactor tests