ref #6806 Move feature tree widget initialization to WS editor
ref #7086 Allow drag and drop for taxon filter from taxon navigator
ref #7086, #7095 Implement working set navigator
ref #7086 Selection listening for dirty state changes
ref #7086 Add browse button to open working sets in WS editor
ref #7086 Initialize UI elements with WS params
ref #7086 Fix potential ClassCastException
ref #7086 Add feature tree to WS editor
ref #7086 Set text field to non-editable
ref #7086 Add taxon tree to working set editor
ref #7086 Add term combo viewer to working set editor
ref #7086 restructure packages