Since this is currently only useful to interpret presence data, we
send this only if presence is requested.
I'm not sure that server_timestamp is the right name for this field,
but ultimately it should match the main presence API format.
This parameter has never been used, and causes an unnecessary database
query.
We keep the num_push_devices_for_user function, since we may have uses
for it down the line.
Fixes part of #14166.
The comment explains in more detail, but this should help avoid cases
where a Zulip server accidentally avoids the nag by having upgraded to
a 2-year old Zulip version from a 3-year-old version 2 months ago.
We now require explicit keywords for all arguments
to fetch_initial_state_data except user_profile.
We provide reasonable defaults to keep the test
code concise.
The query to get "occupied" streams has been expensive
in the past. I'm not sure how much any recent attempts
to optimize that query have mitigated the issue, but
since we clearly aren't sending this data, there is no
reason to compute it.
Using web_public_guest for anonymous users is confusing since
'guest' is actually a logged-in user compared to
web_public_guest which is not logged-in and has only
read access to messages. So, we rename it to
web_public_visitor.
Part of #16094.
Moved the language selection preference logic from home.py to a new
function in i18n.py to avoid repetition in analytics views and home
views.