Made notifications for a silent punishment

[tWizT3ddreaMr]

The silent notification perm is the same as notify but silentnotify, seems like it should be that, but I was not sure how you would want to structure the perm

so permission for silent mute is ab.silentnotify.mute

This is for feature request #557
Resubmitted for the developement branch since it wasn't letting me change base

[Hopefuls]

Is it possible to have this be unified with the current permissions?

Such as:
ab.silentnotify.tempban -> ab.notify.tempban.silent

[tWizT3ddreaMr]

It sure is, however I did it this way so if one were to give ab.notifify.* that wouldn't include these for ease of use and to avoid any unseen issues.
However I am not attached to the permission being separate as most people getting one will get the other on my server.

[DevLeoko]

I actually think that ab.silentnotify.* aligns pretty well with our current permission layout, given that we also have ab.undoNotify.*.
Also, I think it is good that ab.notify.* does not include the silent notify permissions.

So if you don't have any objections @Hopefuls I'd approve and merge

[Hopefuls]

Yup looks good to me

[DevLeoko]

Thanks for your contribution to advancedban