Start to add lists to the schema
Make /lists display lists connected to the library of a logged in admin user
Add many_to_many between lists and books
Display a single list on /list/:id
Display lists directly on the admin page
Make /lists display all lists for all libraries connected to a logged in user
Only let logged in users see /lists

Might chenge this later, though
Change the datatype of lists.is_genre
Show the genres and lists of a book on the book detail page