NOT advanced search on provisions/pages doesn't work correctly

[longhotsummer]

There is a problem with negative queries on pages or legislation with provisions. Because each provision/page is indexed and search individually, it's possible to have a search dog -cat that returns a document with cat in it, because it'll match pages or provisions that have dog but not cat.

So for negative searches we actually need to index and search the full content, not on a per-page or per-provision basis.