Account creation work in progress

Generating codes, sending emails

[#73324702] https://www.pivotaltracker.com/story/show/73324702
Account creation work in progress

Presenting correct instructions sent page

[#73324702] https://www.pivotaltracker.com/story/show/73324702
Account creation work in progress

Presenting a password entry page for activating an account

[#73324702] https://www.pivotaltracker.com/story/show/73324702