The user has an option for setting global
notification settings as well as the same settings
for individual streams. Currently the user has to
keep track of each unmatched stream and then visit
each individual stream whose settings he wants to
update.
Thus this adds a dedicated UI table allowing the user
to view and update the notifications of the specific
streams which differs from the global settings.
It is located on the same page where the user defined
global notification settings can be modified.
Fixes#9228.
Here we have migrated checkboxes of all general notifications to the table.
By general notifications we mean, Mobile, Email, Desktop audio, and visual
notifications.
This is a part of a bigger migration to simply our notifications setting
changing infrastructure for all streams and individual streams. Later we
will add more row to this for different categories of notifications in
addition to the current ones ("Streams" and "PMs, mentions, alerts").
Fixes: #12182.