Allow Post bodies to be blank.
Import configuration groups in config __init__. Import config in models.
Replace reputation test class setup with fixture load.
Add @python_2_unicode_compatible decorator & __str__ method to models.
Add utility function to ellipsize strings for __str__ methods.
Add tests for ellipsize utility.
Change str to string in ellipsize method.
Mend test for ellipsize.
Mend ellipsize.
Move ellipsize to package utils.
Move UserSentiment and Vote common content into UserRelation base model. Finish initial implementation of __str__ methods.