adding users & sessions controllers
setting up login screen and links to it
fixing navigation links for logged in user
adding sign up form
fixing user access bug, changing style.css to style.scss, adding rails_12factor gem
adding users#show
adjusting styling after talking to @rlmark
adjusting styling for logout button in nav
adding link to delete account and adding link to sign up to not logged in header
adding authorized_access and putting it as a before_action on listsand users controllers. adding rescues to application_controller
limiting quick add lists to logged in users' lists
smaller bootstrapJS file and hiding quick add when no lists created