Finalize Give Forms and Emails

[jimtrue]

• Become a Friend becomes the Monthly Subscription/One Time Donation Form
• Partner is a separate form, with dedicated levels
• Emails need to route to the My Account page and provide after sign-up details about rewards, invite to Slack Chat
• Add Custom Fields to send to MailChimp
• Need to add to form WHY they signed up or a Special Note to the Pods Team (some of these are great testimonials)