Add images, various small fixes
Add previews to images in admin
Move StockedItem to satchless
Drop empty classes
Make tests pass
Merge pull request #67 from mirumee/add-images

Add images, various small fixes
Merge branch 'stockeditem-refactor'

Conflicts:
	product/models.py
Cosmetics
Move cart splitting logic to satchless
Merge pull request #70 from mirumee/use-classifying-partitioner

Move cart splitting logic to satchless
Make the project self-contained

Also make URL patterns reference views directly.
Have Travis use proper settings
Fix imports
Drop test discovery
Reorganize tests and dependencies
Iron some Python 3 wrinkles
Use unicode literals
Bump django-payments
One more literal
Bump django-payments