Adds a 'status' for the filtering/searching in the UI, without this its not super clear that you are filtering a recordset due to the menu selections being hidden once closed. You can also use the pills in this status view to delete individual filters.
* 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