Index endpoint

[nicorithner]

• Create items request test
• Add routes using namespace
• Upgrade test to parse the response.body
• Render json in the index action
• Upgrade item request test to test columns
• Install 'jsonapi-serializer'
• Generate serializer
• Create item_serializer definition@nicorithner
• Create items request test
• Add routes using namespace
• Upgrade test to parse the response.body
• Render json in the index action
• Upgrade item request test to test columns
• Install 'jsonapi-serializer'
• Generate serializer
• Create item_serializer definition
• Update index_request_spec for the serializer
• Limit items routes
• Remove relationships from ItemSerializer
• Upgrade to use serializer in items_controller
• Update index_request_spec for the serializer
• Limit items routes
• Remove relationships from ItemSerializer
• Upgrade to use serializer in items_controller