Added pagination to the items index.
[#80349702 - 80350778] Add users and user login

add user model and bcrypt gem

add admin column to users

Add user login

Add alert for unsuccessful login

add login notice for successful login

replace login notice with secondary header
* added sessions helper

remove unneccsary stuff
** remove sessions_helper_spec.rb
** remove 'require bcrypt' from models/user.rb
Added pagination to the items index.
Requested changes from pr review
80308648: test for pagination
80308648: moved tests for item pagination into user_opens_app feature
tests