This commit removes the `/try-zulip` landing page.
The URLs are replaced with `chat.zulip.org/?show_try_zulip_modal`,
which leads to display a modal for spectators.
Fixes#34181.
Adds a help center article that provides an overview and guide
for moving from a self-hosted Zulip organization to using Zulip
Cloud.
Updates the bullet points with the advantages of Zulip Cloud
that is also used in the help center article about choosing
between Zulip Cloud and self-hosting.
Fixes#24042.
Now that we have and use the last_moved_timestamp field in the
message object, we show the correct "edited" or "moved" indicator
for the message when we don't have access to the full message
edit history in the web app.
Documents organization setting that configures what message edit
history can be viewed: content edits and topic/channel moves, only
topic/channel moves, or disabling viewing edit history completely.
Renames article to match new help article header and creates URL
redirect for previous article header.
Also, clean up and consolidate related articles.
Fixes#33684.
Co-authored-by: Alya Abbott <alya@zulip.com>
Updates "help/manage-a-user" links that are contextually for general
information about users to go to the new "help/introduction-to-users"
article.
Adds a link to "Manage a user" in the related articles section of
the new intro to users article.
Adds a tip for creating a collaborative to-do list via the new
compose box button in the markdown formatting article.
Edits the include examples for to-do lists so that the note about
marking a task as complete/incomplete is text before the example
screenshot.
Revises the collaborative to-do list article for a missing comma,
and adjusts some line wrapping.
Fixes#33522.
Instead of referring to users being added or removed from channels,
we now use subscribe or unsubscribed from channels.
Splits the article for adding and removing users from a channel
into separate articles: /help/subscribe-users-to-a-channel and
/help/unsubscribe-users-from-a-channel.
The URL redirects for the combined add/remove articles (for both
channel and stream terminology) go to the subscribe users to a
channel article.
Renames file and redirects existing links to "help/user-roles" as
the previous content tracks to that current file's content.
Updates existing links (excluding ReadtheDocs) to go to either
"help/user-roles" or "help/manage-permissions" depending on which
help center article applies to the content.
