Important changes in this commit:
* We only cache message list for "Combined feed" if it is the
default view.
* We modify existing handling of home message list code so that
it can be used to for any message list that we want to cache
using a new `preserve_rendered_state` variable.
* narrow_state.filter() returns the filter of combined feed view list
instead of `undefined`.
* We start fetching messages from the latest message on app load.
* Messages in all messages data and Recent view are always synced.
* If combined feed view list is not cached, we don't track it's
last pointer, effectively sending user to the latest unread
message always .
Updates the translated empty narrow messages in the web app to use
channel instead of stream.
Updates the message view header that has the same text as the empty
narrow when a stream/channel does not exist or the user does not
have access to the stream/channel because it is private.
Part of stream to channel rename project.
Update the Filter class to use "channel" as the canoncial operator
for streams, but keep using "stream" for user-facing text and URLs.
When searching, "channel" does not create any suggestions until
a colon is added and then it shows suggestions with "stream". And
when a search string with channel as an operator is entered, then
it is replaced by "stream" as well.
Part of stream to channel rename project.
For spectators, the chunk of page_params that originates from
do_events_register isn’t assigned until ui_init.js. That means the
TypeScript type of page_params is mostly a lie during module load
time: reading a parameter too early silently results in undefined
rather than the declared type, with unpredictable results later on.
We want to make such an early read into an immediate runtime error,
for both users and spectators consistently, and pave the way for
runtime validation of the page_params type. As a second step, split
out the subset of fields that pertain to the entire realm.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Aman Agrawal
Lauryn Menard
nimishmedatwal
Anders Kaseorg
evykassirer