Add editableList api doc comments

editor/js/ui/common/editableList.js

@@ -27,6 +27,9 @@
  *   - removable : boolean - whether to display delete button on items
  *   - addItem : function(row,index,itemData) - when an item is added
  *   - removeItem : function(itemData) - called when an item is removed
+ *   - filter : function(itemData) - called for each item to determine if it should be shown
+ *   - sort : function(itemDataA,itemDataB) - called to sort items
+ *   - scrollOnAdd : boolean - whether to scroll to newly added items
  * methods:
  *   - addItem(itemData)
  *   - removeItem(itemData)
@@ -34,6 +37,9 @@
  *   - height(height)
  *   - items()
  *   - empty()
+ *   - filter(filter)
+ *   - sort(sort)
+ *   - length()
  */
     $.widget( "nodered.editableList", {
         _create: function() {