Additional security to BP candidate landing page

[ddfridley]

Create a landing page for candidates that are referred to this site, to record their conversations. The page should take their email from iota and send the candidate an email. When the candidate clicks on the link in the email - the candidate can continue.

Note the candidate could click on the link on the computer they are using - in that case it should open up a window to the next step of what the candidate should do.

But the candiate could also click on the link in an email on another device - like their phone. In that case - the state of the page that initiated the email should advance to the next state.

The next state should be the candidate recorder.