BRANCH SP-772:
   removed the drag_ghost_copy div from the PageNavContainerWdg and made it available during setup
   added spt.table.get_selected_codes()
   improved the interaction of drag and drop with dashed borders displaying at the drop site
   fixed a NamingUtil.eval_template() undefined variable error
BRANCH SP-722:
  made tile layout draggable in a shot planner scenario and added a few attributes to it which already exists in TableLayoutWdg like spt_search_key_v2 and spt_display_value
  made the tile non-highlightable