handle self in content+discussion

confusingly, in searches, "_self" refers to the card on the left. That's why it breaks in the search above that's a simple card.

_whole doesn't break because WQL doesn't recognize the term "_whole" at all. It's just treating it like a string.

what would we want _self to mean in this context? the card's name? the card's content? I think there's already another ticket about this.