* ui: Fix text search for upstream instances
* Clean up predicates for other model types
* Add some docs around DataCollection and searching
* Enable UI Engineering Docs for our preview sites
* Use debug CSS in dev and staging
* Switch upstream-instances to use new style of searchable
* Add search action to DataCollection plus basic README
* Use DataCollection for PowerSelect searching in child-selectors
* Remove old style filterable search for role/policies and instances
* Remove old helpers/components related to search/sort/filter
* ui: Add predicate, comparator and necessary files for the search/sort
* Implement search and sort for upstream instance list
* ui: Tweak CSS so its all part of the component
* Remove the old proxy test attribute
John Cowen