Our original implementation of moving muted topic records when a topic
is moved took a shortcut of treating all change_later usage as
something with intent to move the whole topic.
This works OK when moving the whole topic via this interface, but not
when moving a last off-topic message in the topic.
Address this by changing the rule to match the existing
moved_all_visible_messages variable.
Moves descriptions of notification and subsetting options
when moving content out of the instructions tab blocks
and into descriptive text.
Adds documentation for editing a topic via the message
recipient bar.
Also cleans up a few changes to UI interactions.
Co-authored-by: Alya Abbott <alya@zulip.com>
* Move content on moving topics between streams to a dedicated
article. We advertise it as "move content" to hint that one can move
messages or split topics, and link to it.
* This deletes change-the-topic-of-a-message, because the same content
is already covered in rename-a-topic.
* This commit mostly just moves content between articles. Most of that
content was redundant with the first few paragraphs of the surviving
"rename a topic" article. The former "This is useful for" se ntence
was adapted to the remaining article.
* This commit also adds a redirect for the removed article, and
updates related links.