generate user table
add form for create new user
Merge pull request #17 from larsonkonr/item_and_category_controllers

Item and category controllers
floating nav bar
add seed data for items, categories and item_categories
Merge pull request #18 from larsonkonr/layout

floating nav bar
Merge branch 'master' of github.com:larsonkonr/dinner_dash into item_and_category_controllers
Merge pull request #19 from larsonkonr/item_and_category_controllers

Item and category controllers
fixed conflicts