Admin can add a category to an item
Refactor add/remove categories from items
Merge branch 'add-category' into development
Refactor user spec
Add more FactoryGirl to model specs
Moar factory girl
Fix merge conflicts
Fix syntax error in items/show.html
Refactor feature tests
Delete weak view specs
Fix tests for adding/removing categories from items (admin)
Fix merge conflicts
Fix tests for duplicate email/item title
Remove duplication for logging in as admin in tests
Clean up
Move remove_category to admin/items controller
Fix merge conflicts