Convert Devise Pages to Haml

All Devise pages have been converted to Haml, with internationalization
already built in.
Turn Devise Shared Links into Buttons
Add Mailtrap Settings

* All Mailtrap settings are controlled by environment variables.
Add Devise Confirmable Module

* Users can now be confirmed with a quick email.
Add Devise Lockable Module
Add Edit Account Button to Right Navigation Panel
Add Environment Variables to README

Finally added information on what environment variables need to exist
for the app to work properly in all environments.