Sort list watchers properly

[tjvr]

List watchers now show up in two places. The one in "lists" is for backward compatibility. The one in "children" allows interspersed ordering with sprites.

Kurt's loading code needs to be adjusted to stack stuff properly.

{
    "objName": "Stage",
    // ...
    "lists": [{
            "listName": "Operations",
            "contents": ["thing",
                "thing",
                // ...
                "thing"],
            "isPersistent": false,
            "x": 5,
            "y": 5,
            "width": 97,
            "height": 181,
            "visible": false
        },
        {
            "listName": "Results",
            "contents": ["Results  F 40 L 40 S 40 G 20 R 40 TS 39 TC 39 CTC 39"],
            "isPersistent": false,
            "x": 8,
            "y": 5,
            "width": 464,
            "height": 117,
            "visible": true
        }],
    // ...
    "currentCostumeIndex": 1,
    "penLayerMD5": "279467d0d49e152706ed66539b577c00.png",
    "tempoBPM": 60,
    "videoAlpha": 0.5,
    "children": [{
            "objName": "Gobo",
            // ...
        },
        {
            "objName": "Cat",
            // ...
        },
        {
            "objName": "Sprite3",
            // ...
        },
        {
            "objName": "Sprite12",
            // ...
        },
        {
            "objName": "Sprite11",
            // ...
        },
        {
            "objName": "Sprite10",
            // ...
        },
        {
            "objName": "Sprite9",
            // ...
        },
        {
            "objName": "Sprite8",
            // ...
        },
        {
            "objName": "Sprite4",
            // ...
        },
        {
            "objName": "Sprite7",
            // ...
        },
        {
            "objName": "Sprite5",
            // ...
        },
        {
            "objName": "Sprite6",
            // ...
        },
        {
            "listName": "Operations",
            "contents": ["thing",
                // ...
                "thing"],
            "isPersistent": false,
            "x": 5,
            "y": 5,
            "width": 97,
            "height": 181,
            "visible": false
        },
        {
            "listName": "Results",
            "contents": ["Results  F 40 L 40 S 40 G 20 R 40 TS 39 TC 39 CTC 39"],
            "isPersistent": false,
            "x": 8,
            "y": 5,
            "width": 464,
            "height": 117,
            "visible": true
        }],
    "info": {
        // ...
    }
}