Bug#1078015: gnome-shell-mailnag: works poorly

[Jeremy Bícha <jeremy.bicha@canonical.com>]

Source: gnome-shell-mailnag
Version: 40.0-7
Severity: serious

The user interface for gnome-shell-mailnag is really poor.
- The top bar main icon is missing
- When I tested it today, the menu stopped working completely
- It requires configuring email through a separate app (which is
installed via Depends at least)
- I got this error in my systemd journal

gnome-shell: JS ERROR: ReferenceError: assignment to undeclared variable ext

enable/this.watch_id</<@file:///usr/share/gnome-shell/extensions/mailnag@pulb.github.com/extension.js:271:19

aggregateAvatarsAsync/childWatch<@file:///usr/share/gnome-shell/extensions/mailnag@pulb.github.com/extension.js:352:23
                       @resource:///org/gnome/shell/ui/init.js:21:20

The app has been abandoned upstream for 3 years. I believe it would be
better for our users if gnome-shell-mailnag was removed from Debian.

Thank you,
Jeremy Bícha