Add user registration as part of the notification subscription

[paulcretu]

We would like to pull in the Google Form subscription registration to be part of our registration flow in Orcasite. Ideally, we would:

1. Have a button in the nav with a call to action to either get notified and/or to register an account
2. In the registration form/page, ask whether they'd like to be notified when there are orcas to listen to. We would additionally ask them whether they'd like to be part of future UX studies (according to Add UX research opt in (to build separate email list) #100 )
3. Have them answer the survey questions in the Google Form (if they are still relevant)

[skanderm]

The open questions are:

1. What is the call to action (in the nav bar - currently "Get notified")?
2. What does the registration form show?
3. Do we ask people to fill out the survey as part of the same registration page or as an optional last step?

[skanderm]

Proposed initial flow:

1. Keep "Get Notified" as CTA
2. Send people to /register with a redirect param
3. Redirect to the Google Form

[paulcretu]

One concern with this flow is that the register form is quite long

New proposal:

1. Keep "Get Notified" as CTA
2. On click, open a modal to collect email address
3. Redirect to Google Form