Add two buttons (source code, demo), make logo clickable

Former-commit-id: b6ca16c

Author: xhlulu

apps/dash-wind-streaming/app.py

@@ -41,10 +41,16 @@
                 ),
                 html.Div(
                     [
-                        html.Img(
-                            src=app.get_asset_url("dash-new-logo.png"),
-                            className="app__menu__img",
-                        )
+                        html.A(html.Button("SOURCE CODE", className="link-button"), href="https://github.com/plotly/dash-sample-apps/tree/main/apps/dash-wind-streaming"),
+                        html.A(html.Button("ENTERPRISE DEMO", className="link-button"), href="https://plotly.com/get-demo/"),
+                        html.A(
+                            html.Img(
+                                src=app.get_asset_url("dash-new-logo.png"),
+                                className="app__menu__img",
+                            ),
+                            href="https://plotly.com/dash/"
+                        ),
+                        
                     ],
                     className="app__header__logo",
                 ),

apps/dash-wind-streaming/assets/demo-button.css

@@ -0,0 +1,6 @@
+.link-button {
+    margin-top: 10px;
+    margin-right: 10px;
+    vertical-align: top;
+    color: white;
+}