fix (styles): better cursor styles for d-n-d in edit mode
fix (styles): better cursor styles for d-n-d in edit mode

JaredKerim-Mozilla/activity-stream,sarracini/activity-stream,Mardak/activity-stream,mozilla/activity-stream,Mardak/activity-stream,sarracini/activity-stream,JaredKerim-Mozilla/activity-stream,rlr/activity-streams,mozilla/activity-stream,Mardak/activity-stream,rlr/activity-streams,AdamHillier/activity-stream,mozilla/activity-streams,mozilla/activity-streams,JaredKerim-Mozilla/activity-stream,rlr/activity-streams,AdamHillier/activity-stream,mozilla/activity-stream,JaredKerim-Mozilla/activity-stream,AdamHillier/activity-stream,mozilla/activity-stream,rlr/activity-streams,sarracini/activity-stream,AdamHillier/activity-stream,sarracini/activity-stream,Mardak/activity-stream