Nuking Gemfile + Rack

- simplifying impl by removing Rack and Gemfile dependency (gems will be installed via CL)
Adding logout route + button
Allow editing of users
Continuing sample app impl

- auth-guarding routes that require account context

- adding create-account screen

- adding password-reset screen

Continuing sample app impl

- auth-guarding routes that require account context

- adding create-account screen

- adding password-reset screen