This PR does 3 things:
- it replaces texts with icons
- it enables controlling jetpack use, which was missing in the icons and in the code
- it makes the command says what is the missing element, when an error is found
I would propose to squash this whole PR into a single commit if those changes are OK (they are used on all our servers, with the obvious exception of my commits as I made them right now).
This would make things easier in the future.
Another point is that, perhaps, the botallow/botequip wording could be uniformised. This is really a nitpick, but I tend to like consistency. I have NOT done that change though, in an effort to reduce git conflicts with other codebases.