Add the ability to enable/hide a component group

[barchard]

I have a component group that I don't want to be displayed. I would, however, like to record data on it. As a feature request, it'd be nice to be able to hide an entire component group from being displayed.

[jbrooksuk]

Since v2.3.0 is delayed anyway, I'll aim to get this done.

[dbarentine]

We also have certain component groups that we don't want visible to reduce end user confusion but we want our internal team members (who would have user accounts) to be able to see it on the status page. So it would be nice if it was one of three options, Viewable by public, Only visible to logged in users, and Hidden. Basically something similar to how Incident Visibility works.

It would also be nice if this could be done with metrics as well.

[jbrooksuk]

Sure, could you open a new issue for this and the metrics please? :)

[dbarentine]

Sure do you want them separated into two issues?

[jbrooksuk]

Pretty please! :)

[yoyosan]

Hello.

Is it ok with you if I work on this?

LE: Moving comments to #1897

[yoyosan]

@barchard do you want the hidden component groups(see the comments in #1897) to not be displayed on both the status and dashboard pages?

[barchard]

@yoyosan whatever is public should be hidden. For example, I have a group called "name servers" users don't care about this, but as an admin, I want to track it for myself.