Improve sign in process for mobile phones w/ QR

[gbathree]

Currently, the flow for a new user who clicks on a QR code is:

Go to QR link
Click on sign in
Go through sign in process
Currently, when you returned from mozilla persona back to the badge page, you aren't automatically signed in. So you have to go sign in again in the top right corner.
Assuming you knew to return to the page after signing in (and figured out how to get there), now you must also click "Claim Badge" to actually get the badge.

This is far to long and complicated, so how about:

Go to QR link
Goes to badge page where there's a big very obvious link which says "Sign in to claim badge"
Click on link, go through sign-in process
Link in email from Mozilla Persona automatically returns to the badge page and says "Congratulations, you claimed the ___ badge" - no additional clicks necessary.