Milestone M29 updates

Let's go through what we got done in Milestone M29 (Jan 27 - Feb 09).

Enhancements

• The payment element now has the ability to apply tax.

• Forms now support conditionally skipping payments during submission.

• Notifies form creators when access token for Google Sheets integration is revoked.

• The UI now uses custom domain-based URLs, including emails.

• Insights has been renamed to Analytics.

Bug fixes

• Post-submission jobs are now handled gracefully when the form is deleted.

• A few permission-related issues have been fixed.

• A page crash while reloading the themes page in specific cases has been fixed.

• An edge case has been handled with a unique submission option along with a resubmit link on the thank you pages.