User Story 17, Items Index Page

[megstang]

As a regular user
When I visit the items catalog ("/items")
Then I see all items in the system except disabled items

The item image is a link to that item's show page

DO THESE STORIES FIRST:

• User Story 5, Visitor Navigation

Checklist:

• base tests are written
• base code is written to pass tests
• edge case ("sad path") tests written (if required)
• edge case code written (if required)
• code is reviewed
• branch is merged
• all tests still pass

child of turingschool-examples#222

child of turingschool-examples#242

depends on turingschool-examples#235