Add blacklist commands for keywords

Prompted by this: http://chat.stackexchange.com/transcript/message/33655049#33655049

I (and bwDraco) think that it would be great if we could implement a !!/blacklist-keyword command or similar.

Since we already have the !!/blacklist command implemented for websites, and the bad keyword regexes have already been separated into a text file, it should be fairly easy. All the infrastructure is there; we just need to copy/paste some code and change a few things.

While we’re doing this, it might also be a good idea to rename the existing !!/blacklist command to !!/blacklist-website. I’ve noticed that a few people recently have misunderstood the use of the blacklist command, and changing its name should make that clear.

What are your thoughts?

If we reach an agreement that this would be a good idea, I could do this on the weekend (as long as no-one beats me to it).

[bwDraco]

I second this.

To build on this, I’d also like to see a !!/blacklist-username command. A bit earlier (see #295), I had to manually fork the repo, edit the code, and submit a pull request in order to get a username added to the blacklist.

[ArtOfCode-]

Oh, definitely. I mean you’ve gotta remember which file it is, for a start, and our consistent naming schemes make that really difficult. And then you’ve gotta remember where the newline goes! And don’t forget actually typing, who knows how to do that these days?