!!priv command to link to a privilege on Stack Overflow (or whatever depending on the site being on, if possible)

[Unihedro]

Like this:

{INVOCATION}priv(ilege) edit(ing)

Will have the bot post:

[`http://stackoverflow.com/help/privileges/edit`](http://stackoverflow.com/help/privileges/edit)

[Vogel612]

I took the liberty to change the syntax slightly by marking parts as optional (see braces). Additionally I'd suggest doing this after #9 to prevent having to do additional work