Parse-MatterMostDownloadsJson - Handle App Updates better

[AndrewRathbun]

  "#:(APP_UPDATE):#": {
    "type": "update",
    "progress": 0,
    "location": "",
    "mimeType": null,
    "addedAt": 0,
    "receivedBytes": 0,
    "totalBytes": 0,
    "filename": "5.4.0",
    "state": "available"
  }

need to handle this better