Show dual batteries properly in Power Management / Cinnamon Settings

[libf-de]

I'm using Cinnamon on a ThinkPad T480 with dual batteries. Currently both batteries are shown in the panel applet, but only the internal one is shown in power management:

The reason for that is, as mentioned in #7745, that additional batteries are only shown if they are fully charged or empty. I see no point doing it like that. Adding the other charging states:

Now it's visible, but no percentage and it's impossible to rename it. Also can't see the point for doing it like this. So, after making every battery a "primary battery":

I've also added "PENDING_CHARGE" and "PENDING_DISCHARGE" as separate states, so it's possible to differentiate which battery is in use / being charged. Those will need translations.

[mtwebster]

Can we leave out the Not Charging/Discharging change for now? We'd have to wait on translations, and typically wouldn't do it until the end of the next development cycle. If we hold off on that change I can merge it now, and we can address it later on.

Thanks

edit: by the way, what theme is that? It's kind of nice.

[libf-de]

Of course, can you just merge the single commit, or should I open another pull request?

The theme is Orchis-dark: https://github.com/vinceliuice/Orchis-theme

[mtwebster]

Ok merged the one commit - b7f958e

I'll leave this open until I get the other one in.

Thanks

[mtwebster]

I had the additional commit in my local repo still.

8214ed1

Thanks