Add a warning for bots that request Administrator permissions

For far too long I've seen bots just request the "Administrator" permission as a lazy way to ensure they have all the permissions they need. While it works, it's certainly overkill and if for example the owner gets hacked, it can turn nasty pretty quickly. That's why I would suggest adding a warning on the permissions step in oauth. It would discourage users from adding potentially dangerous bots, as well as make bot developers actually think about the permissions they are requesting.

I made a little mockup using Inspect Element, but I suspect there are better ways to implement it than I did.