Dev login method

[gnprice]

The Zulip server in development mode supports special modes of logging in that don't require any credentials and are therefore convenient for development. We should support those too.

There's a version of this in zulip-mobile, but it's grown out of date as more fine distinctions between different user roles have been introduced over the years. The zulip-mobile implementation may be informative about how the feature works (though there's also API docs for at least a key endpoint, https://zulip.com/api/dev-fetch-api-key ), but the best reference for the UI is probably what's in Zulip web.

[gnprice]

(Until we implement this, the most convenient workaround is: on the dev server, run:

$ ./manage.py print_initial_password iago@zulip.com

or similarly with the email address of whatever user you'd like to log in as. Then log in using the password that prints.)

[chrisbobbe]

zulip-mobile also uses an undocumented endpoint, GET /dev_list_users. I started a discussion about documenting it.