Created shim and footer partials.
Used SASS format for custom.css styles.
Created user profile page. Defined show action for user resource.
Designed user profile page and gravatar helper.
Designed user signup page.
Implemented create action of user controller allowing to create the new user.
Implemented the happy path of new user creation.
Generated sessions controller.
Designed signin page. Added action for session resource. Created routes for sessions.
Implemented unhappy path for user signin operation.
Created remember_token column and index in users data table.
Implemented user signin functionality.
Corrected UI to hide some links based on the user authentication status.