Appearing as a system update in AppCenter

[NathanBnm]

Prerequisites

• [X] I have searched open and closed issues for duplicates.

Describe the bug

Parental Control plug is currently not available through AppCenter like other switchboard plugs. It just updates with system updates.

Expected behavior

It should be available as a "Parental Control plug" update.

Platform Information

• [ ] I'm using the latest version from git that I've manually compiled
• [X] I'm using the latest released stable version