Owner Onboarding Updates

[taracw]

To improve our onboarding process, we have focussed on three areas that need improvements:

1) Human Process:

• Upgraded the onboarding scripts

2) Admin Process:

• Updates to Boatmaster: Rehab - #3
• Updates to Boatmaster Onboarding Follow up Sidebar #6

3) Email Updates - #5

• Moving emails from Customer.io into the app
• Making a selection of booking mailers "smarter" by including tutorials and videos.

4) [Defer] CMS Page for onboarding videos

• Create page that has onboarding videos, and when the onboarding videos are clicked, they will link here.

5) [Defer] Early spec for lighthouses in the app

• TBD