HUE-2300 [search] Initial support for pivot tree
[search] Fix pivot facet counts
HUE-2272 [fb] Improve UX of Copy/Move modal windows

Added support for the new jHueHdfsTree plugin
HUE-2332 [search] Filer widget can accept multiple values
HUE-2332 [search] Display correct icon for selected exclusion facets
[search] Fix multi query wuth new facet query format
[search] Get pivot click data and restyle filter bar selection/exclusion