[WIP] Cookbook Directory and Search Result UI Updates

This is a work in progress with the goal of updating the Cookbooks directory and ui for cookbook search results.

It is a combination of https://trello.com/c/BEl1jGlB & https://trello.com/c/JLSmCuuh

The mock-up for the search results live here: https://projects.invisionapp.com/share/DGP7AUT4#/screens/19735740?maintainScrollPosition=false

I am currently working on making the changes and adding in the content. The more resource heavy content will probably not be part of this pull request.