Hide watch/blacklist buttons when action has already been taken

[AppeazeTheCheese]

This is to prevent misclicks, and the weird behavior that sends "Action already taken" as a chat message when clicking on a "disabled" action.

[double-beep]

Why not just disable them?

I'm not a fan of hiding them (though I can't remember why I made them clickable when action had already been taken).

[AppeazeTheCheese]

@double-beep That's what I tried to do originally, but I found that disabling a link while keeping the tooltip is a bit of a challenge, and disabling links is generally discouraged anyway, so I went with this. Plus, there's already an indication of whether or not something is watched/blacklisted with the emotes on the right, so I personally don't really see the point in showing it twice. I was also considering making them buttons instead of links which may make this easier, if you would prefer that instead?