Make a basic User model (including secure passwords)
Finish user signup
Add SSL in production
Finish sign in
Finish sign in
Merge branch 'sign-in-out'

Conflicts:
	app/controllers/sessions_controller.rb
	app/helpers/sessions_helper.rb
	app/models/user.rb
	db/schema.rb
	spec/requests/authentication_pages_spec.rb
	spec/requests/user_pages_spec.rb