Add in marker if whole paragraph is transcluded.

Split plaintext generator into paragraphs (not just sections). If all elements in a paragraph are transcluded, give option to skip. This is because e.g., coordinates templates generate text that is technically in a

node but many would want to skip and in particular it appears first in an article so could be mistaken as an article lede but the nature of the text (harder to filter on) and fact that is fully-transcluded are the only signals.