Add some debug information to the site layout
Add a Users resource
Use a user factory to define user objects
Add a test for the user show page
Add a title and heading for the user profile page
Redefine the Bcrypt cost factor in a test environment
Add Gravatar to the user show view
Define a gravatar_for helper method
Add a sidebar to the user show view
Style the user profile page
Add tests for signing up users
Create a form to sign up new users
Add an @user variable to the new action
Style the signup form
Add a create action that can handle signup failure
Display nicely styled form submission error messages
Handle successful signup in the create action
Add a flash message to user signup
Add SSL in production
Define an optional :size parameter for the gravatar_for helper