# Appends SSH public keys to a specified file
  * SSH authorized keys and SSH command configurable in config.py
  * Key controller: Validates SSH key and appends it to a file
  * Views: Serve index, new and submit templates. In addition, login_required
  method in views module checks g.user object for every request except index page.
  * Controller/Model: main.py - needs refactoring
  * forms.py - creates form elements using wtf form extension