[Github-Todos] Inject issue numbers
create user table
initial user model with validations
initial users controller
initial signup view
signup route
add signup path to button
unbork the about page layout
add password_digest to users table for user auth
add password validations to users
refactor user email downcase
make sure errors get rendered out
sign up form
make sign up form not look like ass
basic setup for new action
resource users in routes
resources not resource for routes
set up create and show user action
gravatar helper
show view for users