Fixed TokenCurrentPageTestCase
Fixed TokenCommentTestCase

Could not use `permalink()` because it returns `node/1#comment-1` when we
expect `comment/1#comment-1`. We _should_ probably change that expectation, but
that requires some further tinkering, e.g. the part in `token_tokens()` that
renders `[(any entity):url]` calls `$entity->url()` which differs from
`$comment->permalink()`.