Remove User model. Switching to devise for authorisation / authentication.
Add devise (and some relevant configurations).
Add User model created using Devise.
Add database level checks, db indexes, and a few extra attributes to Lists, Tasks, Users.
Add basic relationships /validations to Task, User & List models.

Minor edit to User model/migration -> changes name attribute to fullname.
Add generated devise views.
Add user fullname to sign up view form fields.
Add StaticPages Controller w/ home & app actions...

... also add corresponding routes.
Complete basic Users / Sessions.

Add sign up/in/out links to application layout.
Corrects error in static pages controller.
Add skeleton Tasks & Lists Controllers.
Add basic methods to Lists, Tasks Controller.

Minor change to static pages controller.
Add routes for Lists & Tasks.
Add seeds to seeds.rb, correct errors in model validations.