message: Let the "delete" on the keyboard can dalete command
diff: @@ -272,6 +272,21 @@ document.getElementById("grid-delete").addEventListener("click", function() {
  deleteCommand(getSelectedRecord());
  }, false);
  +document.addEventListener("keydown", function(e) {
  + var keynum;
  + if(window.event) // IE
  + {
  + keynum = e.keyCode
  + }
  + else if(e.which) // Netscape/Firefox/Opera
  + {
  + keynum = e.which
  + }
  + if(keynum === 46){
  + deleteCommand(getSelectedRecord());
  + }
  +}, false);
  +
  function deleteCommand(selected_ID) {
  if (selected_ID) {
  var delete_node = document.getElementById(selected_ID);
  