add mailchimp mass email ID
auto-subscribe new web users to mass emails
add management command to subscribe old mass email list to mailchimp mass email list
use 'CommCare User' as first name if none is supplied
force mailchimp subscription names to title case
handle changed email for the mass email list too
fix NoneType error
fixing another NoneType error
Merge pull request #3474 from dimagi/mailchimp-mass-email

Mailchimp mass email list