title: How to prevent jstree from ordering the leafs in alphabetical order
body: <p>I'm using a simple jstree with only three leafs. I should present them in the order set by backend, but the frontend automatically orders them to alphabetical order even though I'm not using sort plugin. Is there a way to prevent this behaviour ?</p>
  
  <pre><code>$(document).ready( function() {
  
  $('#jstree2').jstree({
  "core" : {
    "animation" : 0,
    "check_callback" : true,
    "themes" : { "stripes" : true },
    'data' : {
      "url" : "/api/all_graphs_in_json_for/",
      "dataType" : "json" // needed only if you do not supply JSON headers
    }      
  },
  
  "types" : {
    "#" : {
      "max_children" : 1,
      "max_depth" : 2,
      "valid_children" : ["root"]
    },
    "root" : {
      "icon" : "/static/3.3.4/assets/images/tree_icon.png",
      "valid_children" : ["default"]
    },
    "default" : {
      "valid_children" : ["default","file"]
    },
    "file" : {
      "icon" : "glyphicon glyphicon-file",
      "valid_children" : []
    }
  },
  "plugins" : [
    "search", 
    "types",
    "wholerow",
    "unique"
  ]             
  });
  </code></pre>