Fix too many item cells being made in positioned cell pages in some cases, optimize/cleanup page generators
Fix too many item cells being made in positioned cell pages in some cases, optimize/cleanup page generators

Positioned generator now uses one sizing method for both types of pages
(named and numbered only)

Unpositioned generated cleaned up and shortened, uses simpler
and higher performance (but marginally noticeable to users if at all)
operations

FlaminSarge/optf2,FlaminSarge/optf2,Lagg/optf2,Lagg/optf2,Lagg/optf2,FlaminSarge/optf2