Topic: dirty_thoughts -> sexual_thoughts

The bulk update request #11712 is pending approval.

create alias dirty_thoughts (85) -> sexual_thoughts (0)
create alias lewd_thoughts (11) -> sexual_thoughts (0)
create alias lesbian_thoughts (63) -> sexual_thoughts (0)

Reason: Changes slang and judgmental wording to objective wording. I'm also including lesbian_thoughts because it seems overly specific, but I can leave it as-is if people prefer.