We now ensure `create_realm` adds you to a default deployment and that
`create_deployment` removes the old deployment association when
performed.
(imported from commit 5b94fb07b8e11332765b057dc640a5ed873ec99e)
This needs to be deployed to both staging and prod at the same
off-peak time (and the schema migration run).
At the time it is deployed, we need to make a few changes directly in
the database:
(1) UPDATE django_content_type set app_label='zerver' where app_label='zephyr';
(2) UPDATE south_migrationhistory set app_name='zerver' where app_name='zephyr';
(imported from commit eb3fd719571740189514ef0b884738cb30df1320)
Luke Faraone
Jessica McKellar
Tim Abbott