preventing cell width collapse during dragging, borrowed from here http://www.foliotek.com/devblog/make-table-rows-sortable-using-jquery-ui-sortable/
preventing cell width collapse during dragging, borrowed from here http://www.foliotek.com/devblog/make-table-rows-sortable-using-jquery-ui-sortable/

dreimannzelt/activeadmin-ranked-model,dreimannzelt/activeadmin-ranked-model