Do not allow uninstalling anything required by a system application
@mcatanzaro
Submitted by Michael Catanzaro Link to original bug (#723922)
Description
A user reported this in another bug:
"nm-connection-editor is shown in Software, and is removable; it removes in this case Control Center (silently), and that’s really bad."
Since this app is required by an uninstallable system app (gnome-control-center), it should itself be uninstallable.