Support setting default_to_stream, default_events_register_stream, and
default_all_public_streams during in the bot creation API.
(imported from commit bef484dd8be9f8aacd65a959594075aea8bdf271)
Looking at the historical data, fewer than 50% of active users have
completed the checklist, which means that it is just persistent
clutter. We also have other better ways of encouraging people to send
traffic and get the apps now.
This commit removes both the frontend UI and backend work but leaves
the db row for now for the historical data.
(imported from commit e8f5780be37bbc75f794fb118e4dd41d8811f2bf)
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)