The ordering recommendations given for the CursorPagination scheme
actually apply to all pagination schemes, an unsuspecting developer that
implements the more common `LimitOffsetPagination` or
`PageNumberPagination` classes is unlikely to be aware of the importance
of consistent ordering.
This commit moves the `Details and limitations` section out of the
`CursorPagination` section and puts it as the very first subsection of
the `Pagination` page so that it's one of the first things that
developers see.
Some examples of inconsistencies as well as how to deal with them are
given, and an extra way to change the ordering of a paginated view is
provided.
Fixes#6886