Addressed two small changes for 9/24 developers website deploy

Author: DavidJVitale

items_metadata.yaml

@@ -623,4 +623,12 @@ samples:
   description: This sample demonstrates how to create and publish simple examples of web maps and scenes using the Python API.
   licenseInfo: ''
   tags: ['Data Science', 'GIS', "Maps", "Web Scenes", "Publish"]
+- title: Building a change detection app using Jupyter Dashboard
+  url: https://geosaurus.maps.arcgis.com/home/item.html?id=e3a0e48329cf4213a15574dd4b6b7694
+  path: ./samples/02_power_users_developers/building_a_change_detection_app_using_jupyter_dashboard.ipynb
+  thumbnail: ./static/thumbnails/jupyter_dashboard_change.png
+  snippet: Create an interactive jupyter dashboard
+  description: This sample illustrates an interactive Jupyter dashboard web app which can be used to detect the changes in vegetation between the two dates. 
+  licenseInfo: ''
+  tags: ['Jupyter', 'Dashboard', "Vegetation", "raster"]
 guides: []

samples/02_power_users_developers/building_a_change_detection_app_using_jupyter_dashboard.ipynb

@@ -645,6 +645,10 @@
  ],
  "metadata": {
   "anaconda-cloud": {},
+  "esriNotebookRuntime": {
+   "notebookRuntimeName": "ArcGIS Notebook Python 3 Standard",
+   "notebookRuntimeVersion": "4.0"
+  },
   "extensions": {
    "jupyter_dashboards": {
     "activeView": "report_default",

samples/04_gis_analysts_data_scientists/california_wildfires_2017_thomas_fire_analysis.ipynb

@@ -1,12 +1,5 @@
 {
  "cells": [
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -947,7 +940,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.10"
+   "version": "3.6.12"
   },
   "toc": {
    "base_numbering": 1,