I have a couple updates to make but I'll announce the rest tomorrow. Tonight, I will announce that I've gotten PolicyKit permissions for my GTK3 systemd-manager squared away. I would recommend reinstalling it from git if you have an older version of it installed right now.
I will give it a production-ready grade so it's a good idea to install this on the desktops of any prospective Linux users who would like to enable/disable systemd services without needing to use the terminal to do so, as is the case today, even on Ubuntu.
Now, you may launch it from your GUI menu, dash, dock, launcher, shell or whatever else you call it simply by searching for and executing the application named `Systemd Manager`.
The desktop file that the install script will install will now launch a GUI asking for permissions and proceed to run the systemd-manager app with root permissions via pkexec. It is working now because I am now including a PolicyKit file specifically for systemd-manager. There is no longer a need to run the app from a terminal with sudo.
I am also now including the first release as well as a screenshot and a README.md file.https://github.com/mmstick/systemd-manager/