Fix planning in AltIndex to return NO_PLAN proper, rather than an object whose proto is NO_PLAN if all subPlans return NO_PLAN.
Fix PositionIndex not using the query when requesting a page of data.
Remove unused var.
Delete unused SimpleScrollView.
Make DOMElementProperty use this.X.document.getElementById rather than $('id').
Improve memory usage of PositionIndex by only storing the id and using the synchronous find() of MDAO to get the real object when required.
Fix typos in stdlib.js
MBug:  Make the placeholder factory return a singleton to save memory and object creation costs.