[master] Encapsulate published/unpublished signalling on Post model.
[master] Encapsulate vote_changed signalling on vote model.
[prune_signals] Remove 'signals' subpackage.
[prune_signals] Place signals into simple module instead of package.
[prune_signals] Add utility function for deriving config name from Post instance.
[prune_signals] Move signals for content creation into models.
[prune_signals] Change name of utility function.
[prune_signals] Move upvote and downvote signal handling from signals package.
[prune_signals] Remove old signals package.
[prune_signals] Add vote_changed signal.
[prune_signals] Remove model_modified signal from tests.
[prune_signals] Remove further mention of model_modified from tests.
[prune_signals] Add save method to Question.
[prune_signals] Fix save method on Post.
[prune_signals] Fix save method on Vote.
[prune_signals] Fix signal sending with kwargs.
[prune_signals] Fix typo.
[prune_signals] Fix get_post_type_for_config utility method.
[prune_signals] Fix arguments to issubclass.
[prune_signals] Add constance fix to models content.