Closes: #17958
Changes:
- Updated the primary and secondary CTAs site-wide
- Updated the /start page to have a multi-stage form that users can fill
out to personalize their onboarding experience
- Updated the signup action to not set a `primaryBuyingSituation` on new
user records (This will now be set when users progress through the
/start form)
- Added two new attributes to the `User` model:
`currentGetStartedQuestionnarieStep` and
`getStartedQuestionnarieAnswers` that save user's progress in the /start
form.
Before this PR can be merged we will need to:
- [x] Update the Zapier webhook that runs when new users sign up to no
longer expect a `primaryBuyingSituation` value
- [ ] Update the User table in the website's database
- [ ] Migrate the existing user records