Even if realm admin can access unsubscribed private stream subscribers,
admin can't add subscriber to stream. Hide the option to add subs to
stream in UI.
This will allow realm admins to access subscribers of unsubscribed
private stream. This is a preparatory commit for letting realm admins
remove those users.
Previously, stream subscribers were not rendering correctly. Due to
following reasons:
- Subscribers list didn't get initialized
- Subscriber members template add subscriber-list-table DOM element
conditionally, which doesn't handle case if user have access to
subscribers later.
Fix this by cleaning subscriber member template to hide the
elements, instead of conditionally adding DOM elements and
initialize subscribers list even if user can't access subscribers.
If user unsubscribe from private stream, then user can't
access unsubscribed stream members.
After subscription removal, immediately render subscription members
template in case of user can't access stream subscriber.
YJDave