We do not update user_group_name_dict when name or description is edited,
which may lead to errors if get_user_group_from_name is called, so to fix
that we update user_group_name_dict also.
The edited group iswas going to the bottom, it is not staying at its
position, so to fix this we sort by ids of the groups to maintain
proper relative order.
(Original commit also fixed another issue, but Tim replaced that with
the previous commit for a better solution).
Fixes#8692.
This fixes the user groups UI to follow the Zulip standard mechanisms
(using the appropriate server_events system to update all browsers
properly). It also, as a side effect, fixes#8692, since it
eliminates the weird behavior of trying to re-insert a user group
after reformatting it in the frontend.
Thanks to Tarun Kumar for preliminary work on this.
Also adds a custom rule to eslint. Since the recommended way of extending
eslint is to create plugins as standalone npm packages, the separate rule
is published as 'eslint-plugins-empty-returns'.
Fixes#8669.
This fixes the real-time sync for the user groups membership data
structure to work like these work in the rest of Zulip; now, edits
made in one browser are immediately and correctly reflected in other
browsers.
Using user_group_name_dict.get() will return `undefined`.
`blueslip.error` statement caused an exception notification to the
admins.
Tweaked by tabbott to add a test for a nonexistent group.
Shubham Dhama
Tarun Kumar
Tim Abbott
Rohitt Vashishtha
Cynthia Lin
Umair Khan