Prevent churn.
issue #22534: Get lazy loading to work in a locally filtered context
issue #22534: Add support for headers on lists. Change list CSS to accomodate headers. Tweak lazy loading that had un-needed code. Tweak parameter widget to not show filter header name when a checkbox is unchecked.
issue 22534: CSS tweaks and other.
issue #22534: Reshuffle a few things on item.
Merge branch '22534' into amp_orm
Progress trying to figure out how to invalidate cache.